On July 20, China launched the ninth Arctic scientific expedition, and 9 researchers of SIO boarded the "Xuelong" icebreaker to the Arctic to carry out research on marine hydrology, marine chemistry and geophysics. CHEN Jianfang, director of the Marine Ecology and Environment Laboratory and director of the Polar Research Center, and GAO Jinyao, deputy director of the Laboratory of Submarine Geosciences, went to Shanghai to see them off.