Builders lay tiles on the rooftop of a five-storey Tusilou, a kind of stilted building, in Xuan'en County of Enshi Tujia and Miao Autonomous Prefecture, central China's Hubei Province, June 19, 2019. The building under construction is a 38.5-meter-high wooden stilted house of the Tujia ethnic group. (Xinhua/Song Wen)