Zi (pinyin: zi) is a first-class Chinese character (commonly used).
This word first appeared in the bronze inscriptions of Shang Dynasty, and its ancient glyph is like giving birth to a child in a house.
The original meaning of "word" refers to having children, which is extended to raising and also to women's engagement. In ancient times, pictographic characters were called "Wen", and the words bred on the basis of pictographic characters were called "Zi".
Later collectively referred to as words, and extended to things written in words, such as fonts, calligraphy works, letters, notes and so on. "Zi" also refers to people's aliases, which is generally related to the meaning of the words used in names.