China's first domestically-built polar research vessel and icebreaker "Xuelong 2" in Shanghai, east China, September 10, 2018. (Photos: Xinhua)

"Xuelong 2" was launched on September 10, 2018 in Shanghai.

China's first domestically-built polar research vessel and icebreaker "Xuelong 2" in Shanghai, east China, September 10, 2018.

"Xuelong 2" was launched on September 10, 2018 in Shanghai.