On April 5, 2023, the Tomb-sweeping Day, many families with children came to sweep the graves for extinct animals in Beijing Nanhaizi Milu Park, which is a traditional event held by the park every year during Qingming Festival, or Tomb-Sweeping Day. Volunteers lead children to sweep the graves for extinct animals, learn about wildlife knowledge, and stimulate people's attention to animal protection. Photos: Li Hao/GT