Tiangan: The unit number of Gregorian calendar year is 4, Tiangan is A, the unit number is 5, and Tiangan is B, in turn.
4 methyl, 5 ethyl, 6 propyl, 7 butyl, 8 pentyl, 9 hexyl, 0 heptyl, 1 octyl, 2 nonyl, 3 decyl.
Ground branch: Gregorian calendar year divided by 12, the remainder is 4, the ground branch is a child, the remainder is 5, and the ground branch is ugly, in turn.
4 children, 5 ugly, 6 cloudy, 7 hairy, 8 Chen, 9 Si, 10 noon, 1 1 not 0 Shen, 1 unitary, 2 Ф 3 Hai.