Passengers disembark from P&O Cruises' passenger ship Adonia at the port in Tianjin, north China, March 8, 2014. The ship made its first visit in Tianjin on Saturday. (Xinhua/Xue Liqiang)

P&O Cruises' passenger ship Adonia is berthed at the port in Tianjin, north China, March 8, 2014. The ship made its first visit in Tianjin on Saturday. (Xinhua/Xue Liqiang)

P&O Cruises' passenger ship Adonia is berthed at the port in Tianjin, north China, March 8, 2014. The ship made its first visit in Tianjin on Saturday. (Xinhua/Xue Liqiang)