Soaking feet with hot water has always been a healthy concept that many people believe in. Especially now the weather is cold, soaking feet with hot water before going to bed can promote blood circulation and improve cold limbs; Proper foot bath can also stimulate meridians, relieve fatigue and help sleep.

China people have a tradition of soaking feet since ancient times, and there is a folk saying that "it is better to soak feet every day than to take tonic". Gan Long, Cixi and others are also keen on foot bath health care. According to legend, Qianlong summed up the foot health care method as "300 steps early and one pot of soup late", in which "one pot of soup" is to soak feet. Cixi will also adjust the prescription for soaking feet according to different seasons.