threshold for olympic participants, making it easier to produce a negative test. so far more than 70 covid cases have been registered among personnel related to the olympics. all of them are nonathletes. meantime, take covid outbreak in a hong kong community has spread to more than 170 confirmed or preliminary positive cases. hundreds of people are under a snap lockdown after cases were reported over the weekend. we're joined now live from hong kong and our david culver in beijing. welcome to you both. what is the latest on this housing of covid outbreak and how is it testing hong kong's zero covid strategy? >> reporter: i'm standing outside a housing area in hong kong and this is effectively the epicenter of hong kong's omicron outbreak. on sunday the city reported 125 new locally transmitted cases of