Data 1: Looking up the Dictionary of Common Words in Ancient Chinese, "Ze" has several meanings: ① Criterion. (2) Yes, yes, yes. 3 conjunctions. It is equivalent to "JIU", "Bian" and "So" in modern Chinese. 4 conjunctions. It means hypothesis, which is equivalent to "if" in modern Chinese. Data 2: Not far from the south of Ningbo Gulou, you can see a pavilion in the lake. There is a monument in the pavilion, and the word "Ping" is engraved on it. This is the water monument in the northeast corner of Yuehu Lake. "Stone Shui Ze Monument" was built by Wu Qian, a magistrate in the Southern Song Dynasty, but it was buried underground due to the annihilation of rivers in the city. With the transformation of Yuehu Scenic Area from 65438 to 0999, the ancient monument was rediscovered. Data 3: In ancient times, Moon Lake was connected with rivers. The river bank of the city should be treated with weir and dam sluice to prevent salt water accumulation and flood discharge and drainage.