Aerial photo taken on April 16, 2022 shows the Wormhole Library in the Haikou Bay in Haikou, south China's Hainan Province. (Xinhua/Zhang Liyun)
Photo taken on April 16, 2022 shows the Wormhole Library in the Haikou Bay in Haikou, south China's Hainan Province. (Xinhua/Zhang Liyun)
Photo taken on April 15, 2022 shows the Wormhole Library in the Haikou Bay in Haikou, south China's Hainan Province. (Xinhua/Zhang Liyun)
Photo taken on April 15, 2022 shows the Wormhole Library in the Haikou Bay in Haikou, south China's Hainan Province. (Xinhua/Zhang Liyun)