C39 A Game of Chess?

It was the end of a game of chess, and the time when the tea brewed was still in the process.

After taking the chess pieces, Zhang Chengdong and the other two began to taste the tea. The old man's surname was Yan, Zhang Chengdong called him Yan Shi, the old man in the robe was Gui, Zhang Chengdong called him mister.

Zhang Chengdong did not intentionally introduce Lu Zheng to the two of them