KUNMING, Oct. 28 (Xinhua) -- Two Chinese law enforcement vessels returned to a port in southwest China's Yunnan Province at noon on Friday, concluding the 122nd joint Mekong River patrol by China, Laos, Myanmar, and Thailand.
Four vessels from the four countries sailed over 600 km for four days and three nights with missions to ensure the safety and stability of the river basin, according to the Yunnan provincial public security department.
A total of 75 law enforcement officers were on board.
The Mekong River, known as the Lancang River in China, is a vital waterway for cross-border shipping. China, Laos, Myanmar, and Thailand have been conducting joint patrols on the river since December 2011.
