(1) In ancient times, heavenly stems and earthly branches was used as 60 branches, among which six groups starting with "A" were Jiazi, JOE, Shen Jia, Wu Jia, Chen Jia and Jiayin, which were called Liu Jia; In ancient times, people's fate was calculated by the method of five elements.
(2) Ancient women were pregnant and said they were pregnant.
(3) a kind of Taoism, mathematical skills.
Pray for protection