BEIJING, May 5 (Xinhua) -- The world in the past 24hrs. A selection of the best daily press photos from Xinhua.

Young people pose for photos at the memorial hall of the site of the first National Congress of the Communist Party of China (CPC) in Shanghai, east China, May 4, 2021. A "May Fourth" themed event was held to celebrate the 100th anniversary of the founding of the CPC Tuesday. (Xinhua/Liu Ying)

Tourists pick cherries at a garden in Jinzhou City, north China's Hebei Province, May 4, 2021. (Photo by Jia Zaixing/Xinhua)

Tourists enjoy themselves at Fengxiang Lake Children's Park in Bishan District, southwest China's Chongqing, May 4, 2021. (Photo by You Qing/Xinhua)

Aerial photo taken on May 4, 2021 shows the view of Guanshan Grassland at Longxian County in Baoji, northwest China's Shaanxi Province. (Xinhua/Tao Ming)

Aerial photo taken on May 4, 2021 shows the scene of a metro bridge collapse in Mexico City, Mexico. At least 23 people were killed and 70 others injured after a metro bridge collapsed in southern Mexico City Monday night, according to local authorities. (Xinhua/Xin Yuewei) 

A health worker collects nasal swab sample from a woman for COVID-19 test in Hyderabad, India, May 3, 2021. India's COVID-19 tally reached 20,665,148 on Wednesday with as many as 382,315 new cases registered during the past 24 hours, confirmed the federal health ministry. (Xinhua)

A reader is seen at the San Francisco Public Library in San Francisco, the United States, May 3, 2021. The San Francisco Public Library began to reopen for limited indoor service on Monday. (Photo by Li Jianguo/Xinhua)

Chen Yiwen (R) of China gestures in front of the camera after winning the women's 3m springboard final at the FINA Diving World Cup 2021 in Tokyo, Japan on May 4, 2021. (Photo by Christopher Jue/Xinhua)