Who inscribed the words "Deyunshe" and what is their significance?

Friends who usually like to watch cross talk know Deyun Club, but have you noticed it? The plaque of Deyunshe is very interesting. We usually see the three characters Deyunshe written in official script, and another one is written in running script. The author of the plaque written in lines is Guo Degang's master Hou Yaowen.

The plaque inscribed by Hou Yaowen is, firstly, because of Hou Yaowen's status as a cross talk master, and secondly, because one of the "Deyun Society" inscribed by him is a "typo". As we all know, the word "virtue" is composed of five parts: double, ten, four, one, and heart. However, in the "virtue" written by Hou Yaowen, the word "ten" is written as the character "shi".

This is very confusing. As a cross talk master, this kind of situation should not happen. What is the meaning of this? I think there are two situations. First, maybe I accidentally made a typo when I was writing it, so I wrote an extra horizontal line on it. But I heard that it can’t be changed or changed, because Hou Yaowen is Guo Degang’s mentor after all. The famous cross talk master, his inscription cannot be changed easily. If he changed it, wouldn't it be disrespectful to Mr. Hou Yaowen? It would also be good to make a commemoration.

Another possibility is that there is no mistake in the writing. "Alternative characters" are allowed in calligraphy. Ancient literati often played word games, firstly to avoid the taboo of the sages' names, and secondly maybe just for fun. .

Of course, I think there is really no need to worry about whether this kind of inscription used for special occasions is a typo. If we want to be more serious, there are too many typos in the inscriptions of historical places of interest.

At the end of this answer, do you think the three words "Deyunshe" in Hou Yaowen's title are typos or do they have other meanings? Welcome to discuss in the comment area.