People pay tribute to martyrs on Qingming Festival in China's Shanghai

Primary school students attend a commemorative event to pay tribute to martyrs at Longhua Revolutionary Martyrs' Cemetery in east China's Shanghai, April 5, 2019. It is a tradition for the Chinese people to pay respect to ancestors, deceased family members, and national heroes and martyrs on the Qingming Festival, a day for tomb sweeping which falls on April 5 this year. (Xinhua/Chen Fei)