As the absurd in Yunnan knows no limits, Mojiang is since 2005 home to an annual twin festival, held over the May holiday.
Why Mojiang? Because of a statistical blip, Mojiang and particularly Hexi township have a very high rate of twins, but some sceptics say it is all due to the water. Oh well. If you are a twin and have nothing better to do that day, maybe head down to Hexi.
Some photos from the 2010 event: http://news.xinhuanet.com/english2010/photo/2010-05/03/c_13276298.htm
As they say in Mojiang: "Tourism in Mojiang keeps on rising."