S and T which stands for Traditional Chinese

"T" stands for Traditional Chinese and "S" stands for Simplified Chinese

Traditional Chinese (English: Traditional Chinese) refers to Chinese characters used in areas where Chinese language is used without simplified characters, commonly known as Traditional Chinese, and is more common in Taiwan, Hong Kong and Macau.

Simplified Chinese (English: Simplified Chinese) refers to simplified Chinese characters, commonly found in mainland China and New Malaysia after 70 years.

There are also some Chinese characters that have not been simplified and continue to be used, called heritage characters.

One of them has the problem of "one simple, many traditional", so when you use translation software to convert from simple to traditional, it is not a problem to convert from traditional to simple. There is no problem in converting from traditional to simplified, but there are quite a lot of misspellings when converting from simplified to traditional. For example: 丑与丑, 凶与凶, 它与它, 後与后, 克与克, 云与云..... ..... You have to check again after conversion.