HO CHI MINH CITY, April 5, 2016 -- Photo taken on April 4, 2016, shows the site of fast-flowing river surging downstream to the Mekong Delta in Ben Tre province, Vietnam. Since late 2015, countries along the Lancang-Mekong River, including Vietnam, have suffered from drought to varying extents due to the impact of the El Nino phenomenon. China released an emergency water supply from its Jinghong Hydropower Station in the southwest Yunnan province to feed the downstream Mekong River between March 15 and April 10, helped to greatly alleviate the devastating situation. So far water discharged from the upper Mekong River has arrived in Vietnam. (Xinhua/Thanh Hung)