Aerial photo taken on June 3, 2019 shows the Royal Caribbean International cruise ship "Spectrum of the Seas" at Shanghai Wusongkou International Cruise Terminal in Shanghai, east China. With nearly 5,000 passengers on board, "Spectrum of the Seas" closed its 47-day journey and docked on Shanghai Wusongkou International Cruise Terminal, as it is the 2000th ship since the cruise terminal opened in 2011. (Xinhua/Chen Fei)