
Students sit in their classroom at a primary school in Hanoi, Vietnam, Sept. 5, 2017. Some 22 million students in Vietnam on Tuesday officially entered their new school year of 2017-2018. (Xinhua/VNA)

Students sit in their classroom at a primary school in Hanoi, Vietnam, Sept. 5, 2017. Some 22 million students in Vietnam on Tuesday officially entered their new school year of 2017-2018. (Xinhua/VNA)