VIENTIANE, June 25, 2016 (Xinhua) -- Lao President Bounnhang Vorachit (2nd L, front) plants a tree during a relative event of building Vientiane as a green model city in Vientiane, Laos, June 25, 2016. (Xinhua/Liu Ailun)
VIENTIANE, June 25, 2016 (Xinhua) -- Lao President Bounnhang Vorachit (2nd L, front) plants a tree during a relative event of building Vientiane as a green model city in Vientiane, Laos, June 25, 2016. (Xinhua/Liu Ailun)