The best time to break the grain is spring and autumn, because the temperature is moderate at this time. It's colder in winter. After fasting, energy, body temperature and ability to keep out the cold decreased. It's hot in summer, and it's easy to get heatstroke when energy is reduced. But this is not absolute. People who are healthy and have experience in breaking grain can break grain at any time all year round. If you want to study, take advantage of this season. Tong Yuan, a new Confucian businessman from Shanghai Jiaotong University, held a health training camp in Changsha.

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