The traditional method of cooling involved spreading the seeds on the ground and blowing air over them with a large fan. Qiu Wenzhen developed a more efficient and hygienic mechanical cooling bin a few years ago.
早期的冷卻方式是鋪散在地上以大型風扇吹涼，幾年前，邱文鎮訂製了機器冷卻筒，節省人力，也更為衛生。