Photo taken on Aug. 7, 2015 shows a helicopter of Astro Air sitting parked on the top of an office building in downtown Shenzhen, south China's Guangdong Province. Astro Air Co. Ltd. Company in Shenzhen on Aug. 7 launched helicopter tours over a scenic part of the city, while saying it also plans to start an intercity "flying taxi" service. The tour over Nanshan District offers tourists a 25-minute ride for 2,598 yuan (about 418.78 U.S.dollars) per person. (Xinhua/Mao Siqian)