What do you mean by three sevenths?

Three-in-one and seven-in-one are concepts in the chronology of cadres and branches.

Trinity is a combination of three branches of the twelve earthly branches, such as Zi Chou Yin (the mouse, cow and tiger in the zodiac), Xu (monkey, chicken and dog), Hai Zi Chou (pig, mouse and cow), Chen (tiger, rabbit and dragon) and so on. Trinity is a bureau composed of two adjacent words from three places, such as Zi Chou Yin, in which Zi Chou is husband and wife.

Seven in one is the specific orientation of a place. Each of the seven combinations has a specific direction. Qihe refers to the relationship between the arrangement order of the seven earthly branches and the orientation of the palace. Such as ugly son Yin Mao Tatsumi, belongs to the south. At noon, the Sea of SHEN WOO belongs to the north. Only ugliness and noon don't collide in the seven combinations, and Chen and Chen don't belong to the palace. The combination of the two produced a three-in-one aristocracy. Shenzichen Water Affairs Bureau, Siyou Ugly Gold Bureau, Yin Wu Fire Bureau, Haimao Wood Bureau. The five elements of Shenhehua Bureau belong to Yang water, the five elements of Siyou Ugly Hehua Bureau belong to Yin gold, the five elements of Hehua Fire Bureau belong to Yin fire, and the five elements of Haimao Hehua Bureau belong to Yin wood.

The above information is for reference only. If necessary, it is recommended to consult relevant literature or consult professionals.