Pyongyang, August 2 (KCNA) -- A flotilla of exercise warships of the Navy of the Chinese People's Liberation Army (CPLA) headed by Vice Admiral Tian Zhong, commander of the North Sea Fleet of the Navy of the CPLA, will pay a goodwill visit to the DPRK from Aug. 4 to 8 on the 50th anniversary of the conclusion of the DPRK-China treaty of friendship, cooperation and mutual assistance. The flotilla consists of the exercise warship "Zheng He" and the escort warship "Luo Yang".