In the northern land, snow moistens the black soil, nurturing fragrant rice. The Jiansanjiang Plain and Songnen Plain are located in one of the world's three major black soil belts, at 45° north latitude, with a large temperature difference between day and night and a long frost-free period. It enjoys nearly 2,400 hours of sunlight per year and a frost-free period of up to 130 days, spanning the 70-degree alternation between winter and summer.