Background material: ① At 8 o'clock on August 8, 21, in Mishan City, Heilongjiang Province, Zhang Jian, the "first person to swim in China", began to challenge the 8 th crossing of Xingkai Lake.

Title: Challenge the Limit, Zhang Jian will cross Xingkai Lake

CCTV reporter Mishan of Heilongjiang Province reported that on August 8, 21, Zhang Jian, known as "the first person to swim in China", began a journey to challenge the limit of crossing the 8km freshwater lake in Xingkai Lake. (Introduction)

Xingkai Lake is a collective name of Daxing Lake and Xiaoxingkai Lake, which is a boundary lake between China and Russia. It is located in Mishan City, Heilongjiang Province. The lake area is oval with good water quality and is known as "Hawaii in the East". In this crossing, Zhang Jian will launch from the lakeside of Group 3, Huyan Village, Baipaozi Township, Mishan City, swim 1 kilometers to the Sino-Russian lake boundary, swim more than 6 kilometers along the Sino-Russian boundary marker, and finally land at Longwang Temple. The total length is expected to be about 8 kilometers. (Text)

On August 6th, Zhang Jian arrived in Xingkai Lake for a trial tour, and accompanied the team of crossing experts to conduct field drills with the guiding boat. When asked if he had confidence in the crossing, he said: "Confidence is there and the state is very good. If we don't encounter too bad weather, the chances of success are still great." (background)