Chinese government says relationship with US is at lowest point since establishment, but sides still manage to hold constructive discussions on disagreements

US secretary of state has plenty to discuss in Chinese capital, from human rights issues to trade with Taiwan, Hong Kong, and detained American citizens

Qin Gang holds separate calls with Eli Cohen, Riad al-Maliki amid recent moves by China to position itself as a regional mediator, including brokering Iran-Saudi normalization deal