Rice cultivation in Tangyuan County has a history of nearly one hundred years. It is the main producing area of ​​China's cold green rice. It is one of the earliest counties in Heilongjiang to grow rice, and is also the birthplace of rice in the Sanjiang Plain.n“Good mountain and good water out of good rice”, Tangyuan rice has special quality and taste, which is inseparable from Tangyuan’s unique ecological environment, soil characteristics, irrigation water source, climatic conditions, variety and cultivation techniques. In recent years, Tangyuan rice can be seen in major trade fairs across the country, in the grain and oil wholesale markets and supermarkets in large and medium-sized cities. The staff said: "Even if it is the same variety, the rice in our soup rice and other places is absolutely different in terms of nutrients and taste." This also makes "Tangyuan Rice" have the reputation of "Nanwu" (Five Chang) "Bei Tang" (Tangyuan).