The order of strokes outside is

The outer strokes are left, left/right, dot, vertical and dot.

Stroke: 5 paintings.

Pinyin: wài.

Structure: left and right structure, the left is the radical evening, and the right is the Oracle.

Externality is the first-class word in the general specification of China. This word was first seen in Oracle Bone Inscriptions in Shang Dynasty, and it was the same word as "no" at the earliest. Its original meaning is generally regarded as external, as opposed to "internal" and "rational". Extended appearance, abnormality, extra, foreign, etc.

It is also used to refer to the distance of kinship. In terms of blood relationship, because the relatives of the woman are relatively far away from the man, they are often called "foreigners". Such as "consorts" and "grandmothers". From the distance of affection to alienation and abandonment. In addition, it also extends to external appearances such as dignity, words and deeds.

The external shape of Oracle Bone Inscriptions is the same as that of "Bu", and a crescent shape is added to the right side of the bronze inscription. According to Shuowen, the crescent moon is the word "evening". "Evening" means night, and when combined with "divination", it is night divination. It is said that in ancient times, divination must be carried out during the day. If divination is performed at night, it is an exception. Something important or urgent must have happened.

Some people think that the crescent moon is the word "moon", which originally means the satellite moon of the earth, and later extended to the unit of time. Loanwords mean a forecast period from ten days to January, as opposed to a forecast period of ten days or less.