Citizens of Hong Kong visit the Chinese aircraft carrier Liaoning in Hong Kong, south China, July 8, 2017. A flotilla including China's first aircraft carrier Liaoning on Friday arrived in Hong Kong Special Administrative Region (SAR) for a visit, during which Liaoning, for the first time, is open for the public to visit. (Xinhua/Qin Qing)

A citizen of Hong Kong poses for pictures with a naval officer on aircraft carrier Liaoning's flight deck in Hong Kong, south China, July 8, 2017. A flotilla including China's first aircraft carrier Liaoning on Friday arrived in Hong Kong Special Administrative Region (SAR) for a visit, during which Liaoning, for the first time, is open for the public to visit. (Xinhua/Zeng Tao)

A ship with welcoming banners is seen from Chinese aircraft carrier Liaoning in Hong Kong, south China, July 8, 2017. A flotilla including China's first aircraft carrier Liaoning on Friday arrived in Hong Kong Special Administrative Region (SAR) for a visit, during which Liaoning, for the first time, is open for the public to visit. (Xinhua/Zeng Tao)

Citizens of Hong Kong visit the Chinese aircraft carrier Liaoning in Hong Kong, south China, July 8, 2017. A flotilla including China's first aircraft carrier Liaoning on Friday arrived in Hong Kong Special Administrative Region (SAR) for a visit, during which Liaoning, for the first time, is open for the public to visit. (Xinhua/Zeng Tao)

Citizens of Hong Kong pose for pictures with a naval officer on aircraft carrier Liaoning's flight deck in Hong Kong, south China, July 8, 2017. A flotilla including China's first aircraft carrier Liaoning on Friday arrived in Hong Kong Special Administrative Region (SAR) for a visit, during which Liaoning, for the first time, is open for the public to visit. (Xinhua/Qin Qing)