Chinese navy hospital ship Peace Ark arrives at Chittagong Port, some 242 km southeast of capital Dhaka, Bangladesh, Aug. 19, 2013. Chinese navy hospital ship Peace Ark on Monday arrived at Bangladesh's southeastern port city Chittagong, starting its one-week mission to provide free medical service to local people. (Xinhua/Zheng Jianghua)

Bangladesh's Deputy Chief of Navy Staff Saiful Kabir (2nd R) visits Chinese navy hospital ship Peace Ark at Chittagong Port, some 242 km southeast of capital Dhaka, Bangladesh, Aug. 19, 2013. Chinese navy hospital ship Peace Ark on Monday arrived at Bangladesh's southeastern port city Chittagong, starting its one-week mission to provide free medical service to local people. (Xinhua/Ju Zhenhua)

Shen Hao (2nd L), commander of the "Mission-Harmony-2013", reviews the Bangladeshi Navy guard of honor at Chittagong Port, some 242 km southeast of capital Dhaka, Bangladesh, Aug. 19, 2013. Chinese navy hospital ship Peace Ark on Monday arrived at Bangladesh's southeastern port city Chittagong, starting its one-week mission to provide free medical service to local people. (Xinhua/Ju Zhenhua)

Bangladeshi children welcome the arrival of Chinese navy hospital ship Peace Ark at Chittagong Port, some 242 km southeast of capital Dhaka, Bangladesh, Aug. 19, 2013. Chinese navy hospital ship Peace Ark on Monday arrived at Bangladesh's southeastern port city Chittagong, starting its one-week mission to provide free medical service to local people. (Xinhua/Zheng Jianghua)

Bangladeshi Navy guard of honor welcome the arrival of Chinese navy hospital ship Peace Ark at Chittagong Port, some 242 km southeast of capital Dhaka, Bangladesh, Aug. 19, 2013. Chinese navy hospital ship Peace Ark on Monday arrived at Bangladesh's southeastern port city Chittagong, starting its one-week mission to provide free medical service to local people. (Xinhua/Ju Zhenhua)