Houses are enveloped by sea of clouds at Shitan scenic area in Huangshan City, east China's Anhui Province, June 30, 2016. (Xinhua/Shi Guangde)

Houses are enveloped by sea of clouds at Shitan scenic area in Huangshan City, east China's Anhui Province, June 30, 2016. (Xinhua/Shi Guangde)

Houses are enveloped by sea of clouds at Shitan scenic area in Huangshan City, east China's Anhui Province, June 30, 2016. (Xinhua/Shi Guangde)

Mountains are enveloped by sea of clouds at Shitan scenic area in Huangshan City, east China's Anhui Province, June 30, 2016. (Xinhua/Shi Guangde)

Houses are enveloped by sea of clouds at Shitan scenic area in Huangshan City, east China's Anhui Province, June 30, 2016. (Xinhua/Shi Guangde)

Houses are enveloped by sea of clouds at Shitan scenic area in Huangshan City, east China's Anhui Province, June 30, 2016. (Xinhua/Shi Guangde)

Mountains are enveloped by sea of clouds at Shitan scenic area in Huangshan City, east China's Anhui Province, June 30, 2016. (Xinhua/Shi Guangde)

Houses are enveloped by sea of clouds at Shitan scenic area in Huangshan City, east China's Anhui Province, June 30, 2016. (Xinhua/Shi Guangde)

Houses are enveloped by sea of clouds at Shitan scenic area in Huangshan City, east China's Anhui Province, June 30, 2016. (Xinhua/Shi Guangde)

Houses are enveloped by sea of clouds at Shitan scenic area in Huangshan City, east China's Anhui Province, June 30, 2016. (Xinhua/Shi Guangde)

Houses are enveloped by sea of clouds at Shitan scenic area in Huangshan City, east China's Anhui Province, June 30, 2016. (Xinhua/Shi Guangde)

Houses are enveloped by sea of clouds at Shitan scenic area in Huangshan City, east China's Anhui Province, June 30, 2016. (Xinhua/Shi Guangde)