Why is the sudden word Baotu Spring in Jinan missing a dot?

The prefix "earth" on the south gate plaque of Baotu Spring is missing a dot. On the archway at the main entrance of Daming Lake, there is a dot next to the word "Sun" of "Minghu", which becomes the words "Eye Moon" and "Ming".

There are two kinds of legends:

Legend 1: The dot on the cover of a "sudden" treasure looks like a hat. If the hat is taken off, it means that Baotu Spring will gush forever without end.

Legend 2: When a stone tablet was erected next to the spring eye, the spring gushed out fiercely at that time, rising four or five meters, and the word "tu" was washed away in a moment. After this point fell into the water, it drifted to Daming Lake. Therefore, the word "Ming" beside the word "day" on Daming Lake becomes an "eye".

In fact, in the past, it was more common to have one more Chinese character and one less Chinese character. For example, the couplet of Confucius in Qufu reads "Live with the country, live with wealth and officials, and live with moral saints", and the word "rich" on the couplet is less than the above, meaning "rich without a head"; The next vertical line of the word "Zhang" in the bottom couplet reaches the top, which means that the two "typos" of "the article reaches the sky" suddenly reflect the identity of Confucius, an extraordinary family. The second is taboo. "Hong" was rare in the Qing Dynasty, just to avoid the emperor Qianlong.