What is the word "Yu" in Preface to Lanting Collection?

The word "jade" in the sentence "I will meet the Lanting in the shadow of a member" in the preface to the collection of Lanting by calligrapher Wang Xizhi is the same as today's simplified Chinese characters, while the following word "jade will also feel refined" is written in traditional Chinese characters. It should be understood here that the word "Yu" is not the next simplified word. This word has a long history, and it is a variant of the word "Yu" or a common word (there are also words with two words "Yu" and "Yu"). Today's simplified characters are a part of the ancient simplified characters adopted in the situation of text reform, that is, the so-called variant characters and vulgar characters in the past.

Coincidentally, the word "Wan Li" is not written in Su Dongpo's "Huangzhou Cold Food Poetry", the third running script in the world, but a simplified word today. It's just that the word "Yu" used in the first sentence has a specific meaning, indicating that meeting in the Lanting of Huiji Mountain means "existence". The "Yu" in the other three sentences is a function word in classical Chinese, which has no practical significance. In other words, the last three "Yu" and the first "Yu" are not one word at all, but two words, and there will be no question of who is who in traditional Chinese characters. "

Danger comes before danger. The word "Yu" will appear in the first phase of Oracle Bone Inscriptions (,Xiao Yi, Wu) and the third phase (Yan Xin, Kang), and there are certain changes in the two phases, which means moving. "Yu" is a commonly used Chinese character in ancient Chinese, which contains many meanings. For example, "You" and "Meeting at Lanting under the Mountain Shade." In the swamp. It can also mean "to, and to", such as "sound smells in the sky" There is also the meaning of "self-control", such as "taking care of you" It can also be used as mood auxiliary words, such as "yellow birds fly"

Sometimes "Yu" and "Xu" are common, such as "de", and then Hou Ji is xū. There are also cases where "Yu" leads to "pedantry", which is recorded as yū, such as "Are you good to yourself?" Yes, there is no record of Oracle Bone Inscriptions and Jinwen. "Yu" and "Yu" can only be used in one case. That is, when "Yu" means "in", "Yu" can be used as a variant of "Yu", which is universal. Therefore, there is only "Yu" in Oracle Bone Inscriptions, and there is no "Yu"