A woman poses for photo at a park in San Mateo, California, the United States, May 28, 2021. (Xinhua/Wu Xiaoling)
A woman walks her dog at a park in San Mateo, California, the United States, May 28, 2021. (Xinhua/Wu Xiaoling)
A child plays at a park in San Mateo, California, the United States, May 28, 2021. (Xinhua/Wu Xiaoling)
A child plays at a park in San Mateo, California, the United States, May 28, 2021. (Xinhua/Wu Xiaoling)
A man sniffs at a flower at a park in San Mateo, California, the United States, May 28, 2021. (Xinhua/Wu Xiaoling)
People play volleyball at a park in San Mateo, California, the United States, May 28, 2021. (Xinhua/Wu Xiaoling)
