The polar icebreaker "Xuelong 2" berths at the port of Jiangnan Shipyard (Group) Co., Ltd. in east China's Shanghai, July 11, 2019. China's first domestically built polar icebreaker "Xuelong 2," or "Snow Dragon 2," was delivered on Thursday in Shanghai, according to the Ministry of Natural Resources. On its maiden voyage later this year, the ship will sail for Antarctica together with "Xuelong," the only Chinese icebreaker in service, in the country's 36th research mission to the region. (Xinhua/Ding Ting)

People visit the polar icebreaker "Xuelong 2" in east China's Shanghai, July 11, 2019. China's first domestically built polar icebreaker "Xuelong 2," or "Snow Dragon 2," was delivered on Thursday in Shanghai, according to the Ministry of Natural Resources. On its maiden voyage later this year, the ship will sail for Antarctica together with "Xuelong," the only Chinese icebreaker in service, in the country's 36th research mission to the region. (Xinhua/Ding Ting)

The polar icebreaker "Xuelong 2" berths at the port of Jiangnan Shipyard (Group) Co., Ltd. in east China's Shanghai, July 11, 2019. China's first domestically built polar icebreaker "Xuelong 2," or "Snow Dragon 2," was delivered on Thursday in Shanghai, according to the Ministry of Natural Resources. On its maiden voyage later this year, the ship will sail for Antarctica together with "Xuelong," the only Chinese icebreaker in service, in the country's 36th research mission to the region. (Xinhua/Ding Ting)

Photo taken on July 11, 2019 shows an inner view of polar icebreaker "Xuelong 2" in east China's Shanghai, July 11, 2019. China's first domestically built polar icebreaker "Xuelong 2," or "Snow Dragon 2," was delivered on Thursday in Shanghai, according to the Ministry of Natural Resources. On its maiden voyage later this year, the ship will sail for Antarctica together with "Xuelong," the only Chinese icebreaker in service, in the country's 36th research mission to the region. (Xinhua/Ding Ting)

The polar icebreaker "Xuelong 2" berths at the port of Jiangnan Shipyard (Group) Co., Ltd. in east China's Shanghai, July 11, 2019. China's first domestically built polar icebreaker "Xuelong 2," or "Snow Dragon 2," was delivered on Thursday in Shanghai, according to the Ministry of Natural Resources. On its maiden voyage later this year, the ship will sail for Antarctica together with "Xuelong," the only Chinese icebreaker in service, in the country's 36th research mission to the region. (Xinhua/Ding Ting)

Photo taken on July 11, 2019 shows an inner view of polar icebreaker "Xuelong 2" in east China's Shanghai, July 11, 2019. China's first domestically built polar icebreaker "Xuelong 2," or "Snow Dragon 2," was delivered on Thursday in Shanghai, according to the Ministry of Natural Resources. On its maiden voyage later this year, the ship will sail for Antarctica together with "Xuelong," the only Chinese icebreaker in service, in the country's 36th research mission to the region. (Xinhua/Ding Ting)

A staff worker walks on the deck of polar icebreaker "Xuelong 2" in east China's Shanghai, July 11, 2019. China's first domestically built polar icebreaker "Xuelong 2," or "Snow Dragon 2," was delivered on Thursday in Shanghai, according to the Ministry of Natural Resources. On its maiden voyage later this year, the ship will sail for Antarctica together with "Xuelong," the only Chinese icebreaker in service, in the country's 36th research mission to the region. (Xinhua/Ding Ting)

Photo taken on July 11, 2019 shows the fresh-keeping equipment of polar icebreaker "Xuelong 2" in east China's Shanghai, July 11, 2019. China's first domestically built polar icebreaker "Xuelong 2," or "Snow Dragon 2," was delivered on Thursday in Shanghai, according to the Ministry of Natural Resources. On its maiden voyage later this year, the ship will sail for Antarctica together with "Xuelong," the only Chinese icebreaker in service, in the country's 36th research mission to the region. (Xinhua/Ding Ting)

Photo taken on July 11, 2019 shows the equipment for scientific research on the deck of polar icebreaker "Xuelong 2" in east China's Shanghai. China's first domestically built polar icebreaker "Xuelong 2," or "Snow Dragon 2," was delivered on Thursday in Shanghai, according to the Ministry of Natural Resources. On its maiden voyage later this year, the ship will sail for Antarctica together with "Xuelong," the only Chinese icebreaker in service, in the country's 36th research mission to the region. (Xinhua/Zhang Jiansong)

Zhang Kansheng, the chef of polar icebreaker "Xuelong 2" is seen in the kitchen of the ship in east China's Shanghai, July 11, 2019. China's first domestically built polar icebreaker "Xuelong 2," or "Snow Dragon 2," was delivered on Thursday in Shanghai, according to the Ministry of Natural Resources. On its maiden voyage later this year, the ship will sail for Antarctica together with "Xuelong," the only Chinese icebreaker in service, in the country's 36th research mission to the region. (Xinhua/Zhang Jiansong)

Guo Qingyun, an engineer of the polar icebreaker "Xuelong 2" is seen in the cabin during a introductory tour in east China's Shanghai, July 11, 2019. China's first domestically built polar icebreaker "Xuelong 2," or "Snow Dragon 2," was delivered on Thursday in Shanghai, according to the Ministry of Natural Resources. On its maiden voyage later this year, the ship will sail for Antarctica together with "Xuelong," the only Chinese icebreaker in service, in the country's 36th research mission to the region. (Xinhua/Zhang Jiansong)

Photo taken on July 11, 2019 shows the cabin of the polar icebreaker "Xuelong 2" in east China's Shanghai. China's first domestically built polar icebreaker "Xuelong 2," or "Snow Dragon 2," was delivered on Thursday in Shanghai, according to the Ministry of Natural Resources. On its maiden voyage later this year, the ship will sail for Antarctica together with "Xuelong," the only Chinese icebreaker in service, in the country's 36th research mission to the region. (Xinhua/Zhang Jiansong)

Wang Hailang, a senior engineer of Polar Research Institute of China, introduces the operation area of moon-pool of polar icebreaker "Xuelong 2" in east China's Shanghai, July 11, 2019. China's first domestically built polar icebreaker "Xuelong 2," or "Snow Dragon 2," was delivered on Thursday in Shanghai, according to the Ministry of Natural Resources. On its maiden voyage later this year, the ship will sail for Antarctica together with "Xuelong," the only Chinese icebreaker in service, in the country's 36th research mission to the region. (Xinhua/Zhang Jiansong)

Xing Hao, second officer of the polar icebreaker "Xuelong 2", gestures during an introductory tour on the ship in east China's Shanghai, July 11, 2019. China's first domestically built polar icebreaker "Xuelong 2," or "Snow Dragon 2," was delivered on Thursday in Shanghai, according to the Ministry of Natural Resources. On its maiden voyage later this year, the ship will sail for Antarctica together with "Xuelong," the only Chinese icebreaker in service, in the country's 36th research mission to the region. (Xinhua/Zhang Jiansong)

Photo taken on July 11, 2019 shows the navigation bridge of polar icebreaker "Xuelong 2" in east China's Shanghai. China's first domestically built polar icebreaker "Xuelong 2," or "Snow Dragon 2," was delivered on Thursday in Shanghai, according to the Ministry of Natural Resources. On its maiden voyage later this year, the ship will sail for Antarctica together with "Xuelong," the only Chinese icebreaker in service, in the country's 36th research mission to the region. (Xinhua/Zhang Jiansong)

Chen Qingman, an experimenter of the polar icebreaker "Xuelong 2" , makes a point in the centralized control room of the ship in east China's Shanghai, July 11, 2019. China's first domestically built polar icebreaker "Xuelong 2," or "Snow Dragon 2," was delivered on Thursday in Shanghai, according to the Ministry of Natural Resources. On its maiden voyage later this year, the ship will sail for Antarctica together with "Xuelong," the only Chinese icebreaker in service, in the country's 36th research mission to the region. (Xinhua/Zhang Jiansong)