An aerial view of the Tulou, or earth buildings in Hongkeng village of Yongding, southeast China's Fujian province, on Dec. 9, 2016. Yongding has over 23,000 Tulou, a type of Chinese rural dwellings of the Hakka and Minnan people in the mountainous areas in Fujian province. A total of 46 Fujian Tulou sites have been inscribed in 2008 by UNESCO as World Heritage Site. The biggest Tulou in Fujian is Chengqi Tulou in Yongding, which was listed as a Guinness World Record in 2010. [Photo: Chinanews.com]