What the little frog said in calligraphy is over.

In calligraphy, what the little frog said needs a full stop. According to Chinese grammar rules, punctuation marks are needed at the end of every sentence. A period indicates the end of a phrase or sentence, and indicates that a new sentence follows. Therefore, what the little frog said also needs a full stop, which is conducive to the structural integrity of the article and helps readers better understand the content of the article.