One said: It's because the water in ancient Baotu Spring was as high as tens of feet, and the monument was washed down several times. So in the Ming Dynasty, the Jinan government invited Hu Li, the governor of Shandong Province, to put a tablet on it. On the Dragon Boat Festival, the magistrate set up a stone tablet engraved with Baotu Spring at the source of Baotu Spring. But it was soon found that two points on the word "Tu" were washed away by the empty spring water, and they all said that they rushed to Daming Lake, and one of them was left on "Ming".
Second, the word "Daming Lake" is derived from the Daming Lake Monument in Jiaqing, Qing Dynasty, and this "eye moon" is the writing method for posting. In the art of calligraphy, for the balance of font structure or aesthetic feeling, there are often cases of adding and subtracting pens.
Three theories: calligraphers in the Qing Dynasty often wrote "Ming" in Ming Dynasty.