Lead: Entering the beginning, this also means that the hottest and most difficult day of the year has arrived. According to the calculation of the lunar calendar, Sanfutian appears between the small summer festival and the Liqiu festival, which is the highest temperature and the most sultry season of the year. The three days are divided into the beginning, the middle and the end, and the beginning of this year is from July 19 to July 28.
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