The soil of Yanqian Town is sandy and conducive to the cultivation of peanuts. Dongfeng Village is known locally as "Peanut Village". The peanut harvest season is the most happy, busy, also the most worry time of the villagers. Unlike other crops, peanuts need to be washed, boiled and dried within two days of being picked. In the past, if the weather is bad, peanuts can only deteriorate and rot. In order not to let peanuts rot in rainy days, many villagers use wood, coal for baking the peanuts, which has high labor cost. The baking temperature is difficult to control and the baking quality is difficult to guarantee. There is also pollution of the environment.