Aerial photo taken on Feb 26, 2021 shows the construction site of the Wormhole Library in the Haikou Bay in Haikou, capital city of South China's Hainan province. The Wormhole Library is designed as a landmark in the public life in the Haikou Bay. [Photo/Xinhua]
Aerial photo taken on Feb 26, 2021 shows the construction site of the Wormhole Library in the Haikou Bay in Haikou, capital city of South China's Hainan province. [Photo/Xinhua]
Aerial photo taken on Feb 26, 2021 shows the construction site of the Wormhole Library in the Haikou Bay in Haikou, capital city of South China's Hainan province. [Photo/Xinhua]
Photo taken on Feb 26, 2021 shows the construction site of the Wormhole Library in the Haikou Bay in Haikou, capital city of South China's Hainan province. [Photo/Xinhua]
Photo taken on Feb 26, 2021 shows the construction site of the Wormhole Library in the Haikou Bay in Haikou, capital city of South China's Hainan province. [Photo/Xinhua]
A worker is seen at the construction site of the Wormhole Library in the Haikou Bay in Haikou, capital city of South China's Hainan province, Feb 26, 2021. [Photo/Xinhua]
