Yes, it is a commonly used Chinese character (first-class character), which was first seen in the bronze inscriptions in the early Western Zhou Dynasty. Its original meaning is positive, not biased, and it can be extended to correct meaning, and then to respond words to express agreement, approval and obedience. After the Han Dynasty, "Shi" was used as a copula to express judgment. It also means this, this, this and so on.
Know words. The word "Shi" that can be confirmed can be found in the early Western Zhou Dynasty (or it is believed that there is a word "Shi" in Oracle Bone Inscriptions), and the word "Zi" is written on the upper part of individual glyphs, which can be found in the artifacts of the middle Western Zhou Dynasty.
The meaning of the earliest glyph of "Shi" is unclear, and Guo Moruo thinks it is the original word of "key"; Ma Xulun, Dai Jiaxiang etc. Think that the word image has a definite direction, like taking a herring shape; Comparing it with "Wan", I think that "Shi" is a bug.
The meaning of "yes", Shuowen teaches "straightness" in distorted glyphs, and the meaning of literature has a series of meanings around "straightness". It is often used as a demonstrative pronoun in bronze inscriptions and as a "yes" in written materials of the Warring States period. The judgment word "Shi" appeared in the Western Han Dynasty, but its upper limit is still controversial.
Interpretation of ancient books
Tang Yun: Paper-cutting. "Gathering Rhyme" and "Rhyme Meeting": Paper-cutting? Sound. Shuowen: Left order. Straight is getting better day by day. Name definition: Yes, people are addicted to music. Jade: Yes, right and wrong. "Rite Quli": The husband is a gift, so he is engaged, suspicious, different, and knows right from wrong.
Boya once again: Yes, so is it. A toast: if I can't see it, I won't be bored. The former residence is superior, neither arrogant nor impetuous. Last name. "The surname is urgent": it is the surname, Wu is the instrument, and Tang is the light. Rhyme: Tian Li cut, sound topic. Biography of Ram in Sixteen Years: What is the Moon? Only the moon was caught. Note: Yes, so is the moon. Lu people also speak English. Shi Wen: Yes, it's like a word. One voice is rebellion.