Joke Collection Website - Mood Talk - In the Romance of the Three Kingdoms, what does the ancient city of Liu Guan and Zhang Juyihui mean?

In the Romance of the Three Kingdoms, what does the ancient city of Liu Guan and Zhang Juyihui mean?

The meaning is: After passing the five passes, Guan Yu went to the ancient city to join Liu Bei. Meeting Zhang Fei, Zhang Fei suspected that Guan Yu had defected to Cao Cao. Cai Yang led his troops to pursue Guan Yu to the ancient city because his nephew Qin Qi was killed by Guan Yu. Guan Yu killed Cai Yang with his sword without saying a word, which relieved the suspicion between the brothers. The three brothers Liu, Guan, and Zhang reunited in the ancient city.