When will Harbin River thaw?

< strong > the big river in Harbin was thawed on July 9th.

Seven or nine rivers open and eight or nine geese come. On July 9, the earth gradually rejuvenated, the weather turned from cold to warm, the general trend of temperature rose slowly, and the rivers began to thaw slowly. Detailed explanation of river water: The water in the river contains dissolved substances such as carbonate, sulfate and calcium, which is different from seawater mainly containing chloride and sodium. The opening of the 79 River means that on the seventh day, the frozen river surface in the north has begun to melt slowly, and on the eighth day, the birds that migrated to the south for the winter have already flown back, which means that spring has come.