Chief Executive of Hong Kong Special Administrative Region (HKSAR) Lam Cheng Yuet-ngor listens the introduction by Liu Zhe (L), captain of Chinese aircraft carrier Liaoning, on Liaoning's flight deck in Hong Kong, south China, July 7, 2017. A flotilla including China's first aircraft carrier Liaoning on Friday arrived in the HKSAR for a visit, during which Liaoning will, for the first time, be open for the public to visit. (Xinhua/Zeng Tao)