Full coverage: G20 Hangzhou Summit

US President Barack Obama arrived in Hangzhou this afternoon to attend the G20 summit. This is said to be his final bout of overseas diplomacy before the US presidential election in November. He was welcomed by the Chinese Ambassador to Washington, Mr. Cui Tiankai, and other Chinese officials at the airport. CCTV's Tian Wei sat down with Mr. Cui, talking about US-China relations.