The reason why Dandong chestnut is cheap is that chestnut is the dominant economic forest tree species in Dandong, and natural conditions are conducive to Dandong chestnut production, accounting for more than 90% of the area and output of Liaoning Province. The planting area of chestnut in Dandong has grown to115,000 mu, with an annual output of more than 20,000 tons and an annual output value of150 million yuan. It has become an important producing area and export base of chestnut in China. Because of the large output, it is cheap.