Three Chinese Navy ships arrived in Indonesia's seaport of Tanjung Priok, on Monday carrying out friendship mission with several programmes aimed at improving relations between the two countries. During the five-day visit in the seaport, Chinese crews are scheduled to conduct series of programmes including visiting Indonesian navy ship and compete with Indonesian navy in several sport events. The fleet was China's sixth naval escort flotilla served to Gulf of Aden and Somali waters. Chinese Ambassador in Indonesia Zhang Qiyue said the visit of the fleet was part of jubilation to commemorate 60 years of Indonesia-China diplomatic relationship and year of friendship this year.