60 minutes covered this subject
http://www.cbsnews.com/news/china-real-estate-bubble-lesley-stahl-60-minutes/
The Fengdu Ghost City is a tourist attraction about 170 kilometres (110 mi) downstream from Chongqing on the north bank of the Yangtze River. It is an attraction that we were able to see during our 2002 cruise tour along the Yangtze River. Legends said that Ming Mountain is one of the 72 graveyards for Taoism. Tao believes when people die, their spirits will gather there (also called "spirit world"). All the temples were built at Western Jin period (265 ~ 420A.D.) and rebuilt in Ming and Ch'ing Dynasty (1386 ~ 1911A.D.)
The City of Ghosts was a place of worship before the flooding of the Three Gorges due to the Three Gorges Dam Project. Today it is a tourist attraction the Chinese and foreigners visiting the Three Gorges on their Holidays. The site has been almost entirely rebuilt and replicated from the original city that now sits 70 metres below the waters surface.
Fengdu is the only ghost city in China. The temples are all over the mountain with many statues. In the "spirit world", there are series of super beings in the temples. They all have its own responsibility, they guard the spirit world.
But wait there are more ghost cities in China. On our way to the Shanghai airport I noticed several large building complexes that did not seem to be occupied. Our guide noticed that I was looking at the buildings and her comment was that the farmers got rich by selling the land for apartments. Great but there wasn't any transportation going to or from these "cities" nor did I see any cars or in fact any traffic moving. Here are a few videos from other explorers that noticed the same thing.But not all are apparently true ghost cities just not fully inhabited - or so they say.