What does the story of three visits to the cottage mean?

make three calls at the thatched cottage/repeatedly request sb to take up a post

Gu: visit; A thatched cottage. It was originally a story about Liu Bei's visit to Zhuge Liang at the end of Han Dynasty. Metaphor is sincere and invited again and again.

At the end of the Eastern Han Dynasty, Zhuge Liang lived in a thatched cottage in Longzhong.

Counselor Xu Shu recommended Zhuge Liang to Liu Bei as a wizard. In order to ask Zhu Liang to help him conquer the world, Liu Bei went with Guan Yu and Zhang Fei to invite him out of the mountain. But Zhuge Liang was not at home, so Liu Bei had to leave his name and go back glumly. A few days later, Liu Bei found that Zhuge Liang was back and took Guan Yu and Zhang Fei to take the snow. I don't know that Zhuge Liang went out again, but Liu Bei and them went again.

Liu Bei went to Longzhong for the third time and finally met Zhuge Liang. During the conversation, Zhuge Liang made a very incisive analysis of the world situation, and Liu Bei was very impressed.

Liu Bei visited the cottage, and Zhuge Liang was very moved and promised to come out to help. Liu Beizun Zhuge Liang as a strategist said to Guan Yu and Zhang Fei: I have Kong Ming, and I still have water like fish!

Zhuge Liang helped Liu Bei win many battles when he was young, which laid the foundation of Shu Han for Liu Bei.