A child presents flowers to martyrs in front of the martyrs' monument at Hunan Martyrs Park in Changsha, central China's Hunan Province, April 4, 2020. People came to Hunan Martyrs Park to pay tribute to martyrs on the occasion of the Tomb-sweeping Day, also known as Qingming Festival that falls on April 4 this year. (Xinhua/Chen Zeguo)