Knowledge expansion:
Feather tone is winter tone, with feather tone as the main tone, which belongs to water and is the main reservoir, running through the five internal organs, strengthening officials and kidney. Yang-feather model can promote the decline of qi activity, regulate kidney and bladder function, enhance kidney function, help liver yin, control heart fire, benefit water and nourish yin, and calm heart and reduce fire. It has the effects of nourishing yin, protecting kidney, storing essence, nourishing liver and heart, and purging lung fire. Used for health care, maintaining kidney qi is conducive to relaxing mood, promoting sleep and eliminating fatigue. Those with insufficient kidney qi should listen more in winter; Used for cultivation, it can promote the storage of essence in dantian; Used for practicing martial arts, it has the functions of strengthening energy, refining essence, building a field list and promoting mental deficiency, and is suitable for static martial arts; It is used for mental work and can soothe the nerves. It is suitable for people with brain fatigue, qi and blood rushing up, head swelling and brain heat, and it is difficult to sleep. When used in sports, it can inhibit excitement and has a positive effect on rest after the game, eliminating fatigue, reducing energy consumption and restoring physical strength; It can be used for the treatment of unhealthy vital energy, excessive fire due to yin deficiency, unfavorable qi circulation, excessive inflammation due to deficiency fire, cough, dysphoria, vexation and insomnia, headache and insomnia, night sleep and dreaminess.