HANGZHOU, June 15, 2016 (Xinhua) -- A quarantine dog sits on the ground and delivers warning signals during a quarantine inspection drill in Hangzhou, capital of east China's Zhejiang Province, June 15, 2016. A quarantine inspection drill was held here Wednesday for the Group of 20 (G20) 2016 summit. (Xinhua/Huang Zongzhi)