A shareholder shows the stock information in Huaibei, east China's Anhui Province, Dec. 12, 2016. Chinese stocks tumbled on Monday as China's top insurance regulator continued to check the "barbaric" behavior of insurers to control financial risks brought about by speculative stake buyouts. The benchmark Shanghai Composite Index dropped 2.47 percent to close at 3,152.97 points. (Xinhua/Xie Zhengyi)
