China's first domestically built polar icebreaker "Xuelong 2," or "Snow Dragon 2", sails on the Yangtze River in China, July 23, 2019.
Xinhua丨Updated: July 26, 2019
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Workers help China's first domestically built polar icebreaker "Xuelong 2," or "Snow Dragon 2", berth at its home port in Shanghai, East China, July 23, 2019. [Photo/Xinhua]