First of all, Ji Xiaolan wrote two wrong words, and no one corrected them.
Ji Xiaolan is a famous genius, so he was asked to write a couplet in front of the Confucius Temple. This couplet looks neat and gorgeous as a whole, but I don't know why Ji Xiaolan misspelled two of them. There are a little rich characters in the upper part, and the chapter characters in the lower part are out of the head. According to our present point of view, we should make appropriate typos.
The strangest thing is that the whole world discovered this problem later, that is, no one corrected these two typos. Everyone is just curious about why Ji Xiaolan made a mistake, whether it was intentional or not, what's the meaning in it, and no one corrected it, which has been handed down from generation to generation.
In Qufu, Shandong Province, Confucius' hometown, there are three caves: Confucius Forest, Confucius House and Confucius Temple. There is a couplet written by Ji Xiaolan in front of the Confucius Temple, which is "with the same country, country, country, country, country, country".
Second, from the "vulgar words" to explain.
It makes sense to explain Ji Xiaolan's two typos from the perspective of "vulgar characters". You know, there are many strokes in ancient Chinese characters. The harder it is to write Chinese characters, the harder it is to learn them. Some people want to use simplified Chinese characters instead. For example, some words can save a little strokes. Either remove a little, or add a radical on the original basis to form a new simplified word, which looks more concise and atmospheric.