An unofficial delegation is simultaneously visiting Taiwan drawing a sharp response from China. In the first significant visit by an official of the Biden administration to China, Special Presidential Envoy for Climate John Kerry arrived in Shanghai for talks with senior Chinese officials. Mr. Kerry will meet China’s top climate official, Xie Zhenhua, and may also meet with other senior officials including Politburo member and top diplomat Yang Jiechi and Foreign Minister Wang Yi. The first visit from the new administration in Washington follows last month’s dialogue in Alaska, where officials from both sides traded barbs publicly in an unusual exchange played out in front of the cameras.