Tiankeng will change with time. This problem is complicated, which is divided into annual sinkholes, seasonal sinkholes, moon sinkholes, sun sinkholes and time sinkholes.
Extended data:
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Annual sinkhole algorithm (sinkhole in the same year): ugly years dry, apply for old age, hard work, full years. The earthly branch here represents the year, and the trunk and fork represent the gossip position. For example, 20 13 is in the northwest (dry) and 20 14 is in the northeast (root).
Four-season sinkhole algorithm: summer kunqiu spring dry, winter roots on the security. Starting from beginning of spring, Quantiankeng is in the southeast (Xun); Starting from the long summer, the tiankeng in summer is in the southwest (Kun); Since beginning of autumn, the sinkhole in autumn is in the northwest (dry); Winter begins in early winter, and the sinkhole is in the northeast.
Lunar Sink Algorithm: Positive May, September, February, June, June, March, July, July, March, July, March, March, June, June, June, June, June, March, June.
Solar sinkhole: there is no solar earthquake in Haimao; Leave in the afternoon; Ugly and ugly; Shen Zichen's day is impressive. For example, Harry was due east (earthquake) and the next day was due west (exchange).