Guangxi occurs in the collapse, Guangxi collapse reason: mountain villages encounter heavy rain and appear 30-meter giant pit.

From May 31 to June 2, parts of Guangxi were hit by extremely heavy rains, which caused severe urban flooding. After the rains, sinkholes appeared in Jili and Shanbei villages in Liangjiang Town, Laibin City. In Jili village, four huge pits suddenly appeared, with the deepest one about 30 meters. At the same time, two slight earthquakes below 2 degrees occurred continuously in Liangjiang Town, but only lasted for 3 to 4 seconds, without causing any casualties.

Source: http://www.jnlagua.com/thread-584-1-1.html