power last year. and temperatures injapan are at the highest in nearly 150 years. now, fears the electricity grid could be overwhelmed. welcome to our viewers on pbs in america and around the globe. the chinese president, xijinping, has sworn in hong kong s new leader, john lee. the territory is marking 25 years since the handover from british colonial rule. mr lee is taking over from carrie lam, whose time in office saw beijing tighten its grip on hong kong. this was scene in hong kong in the last hour asjohn lee took the oath of office. mr lee is a security chief who oversaw the police response to hong kong s huge democracy protests in 2019. it s mr xi s first trip out of mainland china since the beginning of the covid 19 pandemic. and it s his first to hong kong since swearing in carrie lam. translation: the practice of one country. translation: the practice of one country, two translation: the practice of one country, two systems. l translation: the practice of l one