What season is the grass green ice in Northeast China?

March civilization. On March 2 1 day, the northeast entered the vernal equinox, and the frozen Heihe section of Heilongjiang Province showed signs of civilization. The floating snow on the ice has melted, revealing the ice, indicating that spring has arrived in March. The melting of ice and snow in the northeast is spring, and it is also a vibrant scene of the revival of everything.