Cemetery staff bow to a tombstone after offering flowers at the Babaoshan People's Cemetery in Beijing, capital of China, March 28, 2020. People can ask the cemetery staff to help clean tombs and offer flowers to the deceased on their behalf via the reservation service system in Beijing around the Tomb-sweeping Day, which falls on April 4 this year, as methods to prevent mass gatherings amid the COVID-19 outbreak. (Xinhua/Peng Ziyang)