I heard that there was flooding in the streets of Nanning a few days ago. I wonder if the rains, and flooding caused this problem: http://www.bbc.com/news/world-asia-china-36375726 Googled "Rongxian county" and Wiki says that it is near Yulin. Danb Here is another video of the building collapse I just found on the net:
This one is just a little longer.