1.The pronunciation 1.“Benninizi "is similar to that of" Sister Sun ",so some people misread" Benninizi "as" Sister Sun ".

2. In addition, the word "silly Niniko" itself has a certain meaning of ridicule and banter, so some people may deliberately pronounce it "Sister Sun" to increase humor and interest.

It should be noted that "Benninizi" is not a standard Chinese expression, but a colloquial and localized proverb or dialect. In different regions and cultural backgrounds, people's understanding and use of this word may be different.