Visitors listen to a crew member of China's first domestically built polar icebreaker "Xuelong 2," or "Snow Dragon 2," upon its arrival at a port in Shenzhen, south China's Guangdong Province, Oct. 13, 2019. "Xuelong 2" will sail for Antarctica on its maiden voyage on Oct. 15, 2019, together with another Chinese icebreaker "Xuelong", in the country's 36th research mission to the region. (Xinhua)

Visitors listen to a crew member of China's first domestically built polar icebreaker "Xuelong 2," or "Snow Dragon 2," upon its arrival at a port in Shenzhen, south China's Guangdong Province, Oct. 13, 2019. "Xuelong 2" will sail for Antarctica on its maiden voyage on Oct. 15, 2019, together with another Chinese icebreaker "Xuelong", in the country's 36th research mission to the region. (Xinhua)

Volunteers visit China's first domestically built polar icebreaker "Xuelong 2," or "Snow Dragon 2," upon its arrival at a port in Shenzhen, south China's Guangdong Province, Oct. 13, 2019. "Xuelong 2" will sail for Antarctica on its maiden voyage on Oct. 15, 2019, together with another Chinese icebreaker "Xuelong", in the country's 36th research mission to the region. (Xinhua)

Visitors listen to a crew member of China's first domestically built polar icebreaker "Xuelong 2," or "Snow Dragon 2," upon its arrival at a port in Shenzhen, south China's Guangdong Province, Oct. 13, 2019. "Xuelong 2" will sail for Antarctica on its maiden voyage on Oct. 15, 2019, together with another Chinese icebreaker "Xuelong", in the country's 36th research mission to the region. (Xinhua)

Crew members of China's first domestically built polar icebreaker "Xuelong 2," or "Snow Dragon 2," wave upon its arrival at a port in Shenzhen, south China's Guangdong Province, Oct. 13, 2019. "Xuelong 2" will sail for Antarctica on its maiden voyage on Oct. 15, 2019, together with another Chinese icebreaker "Xuelong", in the country's 36th research mission to the region. (Xinhua)

People pose for photos with China's first domestically built polar icebreaker "Xuelong 2," or "Snow Dragon 2," at a port in Shenzhen, south China's Guangdong Province, Oct. 13, 2019. "Xuelong 2" will sail for Antarctica on its maiden voyage on Oct. 15, 2019, together with another Chinese icebreaker "Xuelong", in the country's 36th research mission to the region. (Xinhua)