Staff members wipe the tombstone of a martyr at the cemetery of Korean War martyrs in Shenyang, capital of northeast China's Liaoning Province, April 3, 2020. The cemetery of Korean War martyrs in Shenyang on Friday organized its staff members to clean the tombstones and present flowers in memory of the martyrs before the Tomb-sweeping Day, also known as Qingming Festival that falls on April 4 this year. (Xinhua/Pan Yulong)
