China's 40th Antarctic expedition team member Pei Jiahao make introductions to visitors on China's icebreaker Xuelong 2 in Hong Kong, south China, April 10, 2024. China's first domestically made icebreaker Xuelong 2 arrived in Hong Kong for a five-day visit, expecting to receive 8,500 visitors. Xuelong 2, which came to Hong Kong for the very first time, entered the Ocean Terminal in Tsim Sha Tsui on Monday morning after completing China's 40th Antarctic expedition.(Photo: Xinhua)

Visitors walk to board China's icebreaker Xuelong 2 in Hong Kong, south China, April 10, 2024. China's first domestically made icebreaker Xuelong 2 arrived in Hong Kong for a five-day visit, expecting to receive 8,500 visitors. Xuelong 2, which came to Hong Kong for the very first time, entered the Ocean Terminal in Tsim Sha Tsui on Monday morning after completing China's 40th Antarctic expedition.(Photo: Xinhua)

This photo taken on April 10, 2024 shows China's icebreaker Xuelong 2 in Hong Kong, south China. China's first domestically made icebreaker Xuelong 2 arrived in Hong Kong for a five-day visit, expecting to receive 8,500 visitors. Xuelong 2, which came to Hong Kong for the very first time, entered the Ocean Terminal in Tsim Sha Tsui on Monday morning after completing China's 40th Antarctic expedition.(Photo: Xinhua)

Ship-borne helicopter captain Zhang Dong introduces polar flight to visitors on China's icebreaker Xuelong 2 in Hong Kong, south China, April 10, 2024. China's first domestically made icebreaker Xuelong 2 arrived in Hong Kong for a five-day visit, expecting to receive 8,500 visitors. Xuelong 2, which came to Hong Kong for the very first time, entered the Ocean Terminal in Tsim Sha Tsui on Monday morning after completing China's 40th Antarctic expedition.(Photo: Xinhua)