I like it. Song Meiling especially liked reading Neijing when he was young. According to Huangdi Neijing, moderate diet is one of the keys to longevity, while improper diet leads to premature aging. Food restriction can not only reduce the gastrointestinal burden, but also stimulate the autonomic nervous system, endocrine system and immune system in a semi-starvation state, thus mobilizing the self-regulation function of the human body, promoting the balance and stability of the internal environment and enhancing immunity. Often full will make people old and damage their health.