The beautiful Songhua River...one of the seven major rivers in China, Heilongjiang is the largest tributary in China. Songhua River is called the Difficult River in the Sui Dynasty, the Tang Dynasty called the water, Liaojin two generations called the duck river, mixed river, Qing Dynasty called mixed river, Songhua River. Songhua River flows through Jilin and Heilongjiang provinces; The basin area is 55.72 10,000 square kilometers, covering Heilongjiang, Jilin, Liaoning and Inner Mongolia in the four northeast provinces; annual runoff is 76.2 billion cubic meters.