An amber weather warning, urging people to be prepared for possible disruption. Some eastern areas could also be affected. Olivia richwald reports. Layers of thick snow a scene of beauty in shropshire, but the first heavy snowfall of the winter is bringing disruption to parts of the united kingdom. Motorists are being told to avoid driving unless absolutely necessary in parts of the north because of the icy conditions, as temperatures plummet down to minus six tonight in parts of scotland and wales. In oldham, greater manchester, this depot has been working 2a hours a day since thursday. The drivers here grit more than 300 kilometres of road. From busy urban centres to remote routes through moorland. With heavy snow showers forecast overnight in this area, they say theyre prepared. Weve just had the forecast in so the temperatures are going to drop quite significantly. Sub zero. So what were doing this afternoon now is we will pre grit all our primary gritting routes and then overnight then well carry on treating and treating throughout the night, getting as much salt on the ground as possible. Its Trans Pennine routes like this that can quickly become hazardous if theyre not well maintained. Oldham council alone expects to use 600 tons of grit this weekend alone and theres still no guarantee these roads will stay open. Although power was out at some properties in the midlands and scotland, in belfast it was sledges out, instead. I like to do snowballs and make a snowman and make models and go down with sleds. Its very slippery and ive been falling down more scenes like this are forecast tomorrow as heavy snow is expected across central areas. But both the north and south may miss out. Olivia richwald, bbc news, oldham. Now on bbc news, it is time for our world. In august 1996, ken and ruth pohler, an american couple from michigan, arrived in china. In the town of suzhou, they adopted a baby girl from a social welfare home. They called her kati. Hey doesnt she look like a picture can you wear shorts in china, when youre teaching . I mean my knees are pretty hot, so i mean. Yeah, no i can. I think trans racial adoptions makes it super obvious that youre different, from day one. She was just beautiful. But seeing that picture and then seeing her in life was, yeah. Very happy, very emotional, just tears running down my face. I grew up in a place that was very white, very caucasian. But for me, my community was so close and so tight. I saw myself as different but i was actually really accepted. But then things started to become different when i went outside that community, and not everyone knew me and knew my story, and they expected me to act certain ways. Kati was probably five years old. And she came up to me, we were at a meeting at church, she asked me whose tummy she came from. Did i come from your tummy . And i said, no, you didnt come from my tummy. You came from a ladys tummy in china. But you came from my heart. You were born of my heart. And she was off running, doing something else. That was all she needed to know, and she was happy with that. Looking back at it now, i thought the right thing to do was to not really pursue that and think about that. I guess part of the reason i didnt pursue it more too was because i knew, especially from my mom, i think it was hard for her. When ken and ruth received their baby, they were given an unexpected piece of paper. It was a note, and it was written by katis birth parents. For the last 15 years, lida and fenxiang have been visiting the broken bridge in hangzhou, hoping to find their daughter. Their story was picked up by the chinese media. Finally, through a contact, lida and fenxiang discovered their daughter had been adopted by a couple in the united states. But katis adopted family didnt think a reunion would be in her best interests. Until now. I guess meeting my birth parents isnt something that i really had a strong desire to do. But i dont think i ever considered it as something that could ever even happen. So now that is happening, its a lot to think about. The dominating emotion is probably excitement. We should have brought our bags to make us look better katis adopted parents told her about the full story of her adoption when she turned 20. She is mature and she made that decision, and so were here to back her completely, and do whatever we can to make sure that its a good experience for her, and that her trip over there will be a blessing to her birth parents. How are you . Im good. How are you . We were just wondering where you were in a way i see it as a loss, but also a gain. Its just a change in the relationship. We pray for kati as she gets ready to go on a journey. That the planned meeting will go well and that shell have safe travel to china, and to return her safely back to us. After finding out about her birth parents, kati decided to fly to china, to meet them herself. I think my biggest fear in meeting my biological family is that somehow i will disappoint them. I mean, in a lot of ways, obviously they feel like theyve let me down. But i also know how much pain they have gone through. Wow, its so large. Yeah, i see that ahead of the big reunion, kati spent some time getting to know wow, its so large. Yeah, i see that ahead of the big reunion, kati spent some time getting to know the country of her birth. Forthe meeting, imjust going to try and take it as it comes, and try to be in the moment as much as possible, and make the best decision for me at that time. This is kati. Hi, hello. The big day has arrived. Kati and her birth family are travelling to the broken bridge where they will meet for the first time. Im excited. I feel pretty ready. I feel like theres been a lot of build up to this point, so i feel like feel like its time. Im generally not a very symbolic person. Like, i think its nice, but im not really one for, like, sentimental things. But since it was my biologicalfathers idea, i respect that, and i do see the beauty in it. So yes, i think meeting on the bridge is definitely the logical choice, and i think it will be good. The legendary broken bridge in hangzhou is famous in chinese folklore. It is the inspiration for an ancient love story, and millions of people visit each year. It was a beautiful afternoon. And so it was definitely kind of surreal, walking across the bridge, just looking at the people, like, this is it. Im only going to do this once. You only meet your biological family once in your life. I dont get super emotional in those types of situations, but for my birth mother, i think she was just. She was actually really sad, in a lot of ways. She just kind of held me and sobbed for about a half hour. And thats another time when i was like, you know what . Im glad i cant speak chinese, because i have no idea what i would say anyway. So after the meeting, like, my biologicalfamily really wanted me to, like, stay with them for the night. And i was like, no. Ive met so many people today, i havent been sleeping a lot, so i just want some time to myself. So i think yeah, that first night, yes, i didnt stay with them. And then after that, the day after that, i hung out with, yeah, my parents. Her biological parents have brought kati back to theirfamily home in hangzhou. Translator im katis biological mother. Hello. Thank you very much, for taking care of kati. Were also very thankful to you for giving her life. That night, they skype chat with katis adoptive family in the us. It is the first time the two families have met. Can you tell us a little bit how the bridge reunion went . I havent really tried to talk about it yet, that night, they skype chat with katis adoptive family in the us. It is the first time the two families have met. Can you tell us a little bit how the bridge reunion went . I havent really tried to talk about it yet, because i dont know how to talk about it well. Because. 0k. I dont know how to capture what it was. I dont know. We love her dearly, and she knows that, and we havent lost anything today. We havent lost anything at all. Were just happy for her. Im just happy that shes come to this point. Ijust hope theres a sense of peace and contentment with her, and that, you know, if it means developing a relationship with them, that thats ok, because thats good. One thing i realised, going on this trip that i almost did it more for my biological family than myself. Obviously it was both, but in a lot of ways, it was a lot more meaningful to them. Just because it was a lot more traumatic for them, and theyve been living with a lot more emotion about it for so many years. But for me, also, it was good. It was yeah, it was good in different ways, i think, for us. But, for me, it was definitely fulfilling. What is it . Translator chicken wing. Sure. Translator my oldest daughter, she is already 25, but she never went into the kitchen once. Ill teach her how to cook. I guess having two sets of parents, its its hard, because its a lot of family ties, and thats like, how much to communicate, and im not really good at communicating with my family in the first place, and i have a whole other family. The next morning, katis dad wants to take her to the place where he abandoned her. But it is difficult to find the exact spot. The next morning, katis dad wants to take her to the place where he abandoned her. But it is difficult to find the exact spot. He reallyjust wanted my forgiveness, which is. It was just really interesting, because, like, i understand from him why he needed forgiveness. But, for me, i didnt feel like i needed to forgive them for anything. Like, from my perspective, i understand their situation, as much as i think i can. And, like yeah, they were stuck. They were stuck in a system that was so broken. Six hours from hangzhou is this town. It is the original family home, and it is where katis grandmother lives. I think another really cool moment was, like, meeting my grandma. I think she was on the boat when i was born, so, like, shes been also thinking about me a lot through the years. Just seeing her, and seeing my extended family, im just like. It really made it feel more like family. I dont know, just seeing how much it meant that i was there, and she really wanted to see me before she died, and that was kind of it was a powerful moment. It is time to say goodbye. All the family are at the airport to see kati off. Back in michigan, a new chapter is beginning in katis life, as she prepares for her final year of university. I guess for, like, for other adoptees who are pursuing reunion or searching, i think its important to just, like, be very aware of your feelings. And, like, theres not really a right and wrong way to feel during any part of the process. No matter how much you know about your adoption, or why you were given up, or how much you feel about it, and how much it hurts, or no matter what the circumstance, i dont think its good to suppress those feelings that might be hard to deal with. The wintry weather will continue to cause disruption across the second half of the weekend. Temperatures as low as 12 or 14 across the snow cover in scotland. Further south we have this band of rain, sleet, and increasingly that is turning to snow as it pushes into the cold around. Especially through the central slice of the country. Ice could be a problem further north. The met office have issued an amber warning for that snow. Be prepared for that snow to cause significant disruption, especially through mid and north wales and parts of northern england, especially in the midlands as well, where we could see five or ten centimetres at low levels, 20 centimetres possible over the hills, certainly enough to cause disruption to travel. During the day, some uncertainty about exactly how far north that snow gets. Further south it will be a mixture of snow, sleet, and probably turning back to rain later in the day. The winds are also going to be an added hazard, gusting 60 miles an hour or more through the English Channel and the blistered wsdl channel as well. A quieter picture across the further northern half of the country. Bahrain few wintry showers in the far north it will be drier here, though temperatures will struggle even to get to freezing during the day. Milder further south, but certainly disruptive snow, which will ease away later in the day. Sunday night and into monday morning, is could be a problem once again as those temperatures plummet overnight. Further south across europe we have an area of low pressure affecting portugal, spain and france with strong winds and hill snow. The Northern Edge of that system could ring gales and heavy rain to southern and south eastern parts of england, but we are keeping a close iam england, but we are keeping a close i am that. Elsewhere across the country, a quieter day to come on monday. Still a few showers in the north and west. It is drier and not quite as cold as it has been through the weekend. On tuesday we have a ridge of high pressure. Like winds and more sunshine, looking dry on tuesday, but temperatures will once again struggled to get much above freezing. Tuesday night into wednesday, this area of rain will push east, with strong winds as well. Followed by sunshine and heavy showers. Not quite as cold as it has been through the weekend. The by. Goodbye. Hello and welcome to bbc news. The British Foreign secretary, borisjohnson will meet the president of iran on sunday. Hes expected to bring up the imprisonment of the british iranian woman, Nazanin Zaghari ratcliffe. Mrjohnson has already had discussions with the Iranian Foreign minister. Our Diplomatic CorrespondentJames Robbins reports. It could look routine. Borisjohnson and his iranian counterpart, Mohammad Javad zarif, shake hands on the way into talks. But theres nothing routine about this encounter. The foreign secretary looking uncharacteristically tense,