Aerial photo taken on Dec.18, 2021 shows a helium balloon at the East Lake scenic area in Wuhan, capital city of Hubei Province. The helium balloon, with a diameter of 23 meters, can accommodate up to 30 people at a time. It can offer an incredible experience to tourists, with a maximum lift of 150 meters. (Photo: pic.hubeidaily.net/Zhong Shan & Zhao Jun)