Everyone should light a candle. In spring, silkworms will spin until they die. Every night, candles will drain the wick.
When the candle is not gray, the wax is yin and the candle is yang. What should I do if I want to make up the sun and candlelight to make it more energetic? This wax must be a lot. Without wax, there would be no candles. Therefore, if you want to fill candles, you must look for them from wax. This is seeking yang in yin.
Similarly, no matter how much wax there is, if there is no candle burning, Yin will always be Yin, dead Yin and waste Yin. Only when the candle burns will the effect of this wax come into play. This is seeking yin in the yang.
In short, Yin is the foundation and Yang is the energy. Without the foundation of yin, yang has no source of biochemistry; Without the drive of Yang, Yin can't be used.
"People who are yin and yang in the four seasons are the foundation of all things, so saints raise yang in spring and summer and yin in autumn and winter to learn their roots." -Huangdi Neijing
If you understand this truth, you will understand why you need to raise yin in autumn and winter, isn't it just to seek yang in yin? Let the sun be the spirit of next spring and summer be more vigorous. Why raise yang in spring and summer? Isn't it seeking yin in the yang? Let Yin Qi be fully utilized in the coming autumn and winter.
Understand this truth, you will also understand why you eat radishes in winter and ginger in summer, and why you eat radishes in bed and get up to eat ginger. Eating radishes in winter, sleeping with radishes are all for nourishing yin, eating ginger in summer and getting up with ginger are all for nourishing yang.
Understand this truth, you will understand that we sleep at night to nourish yin during the day, and we exercise during the day to nourish yin at night. Do we sleep at night to sleep during the day? Are our daytime activities for evening activities?
The four distinct seasons, namely, spring, summer, autumn and winter, and the combination of yin and yang day and night, are all creating living conditions for life. Life in the city is black and white, and winter and summer change, which violates the natural law of being born in time and being raised in time.
The ancients in China always thought that "heaven and earth are the big universe and human body is the small universe". Man is in harmony with heaven and earth, and only by conforming to the right time, place and people can he achieve health and longevity.