Ascll,unicode,utf-8

ASCLL code takes up one byte, but most Chinese characters exceed one byte, so garbled

Unicode codes typically account for 2 bytes, and some of the characters are 4 bytes

Utf-8 code, the UTF-8 code encodes a Unicode character into 1-6 bytes according to a different number size, the commonly used English letter is encoded in 1 bytes, the Chinese character is usually 3 bytes, only the very uncommon characters will be encoded into 4-6 bytes. If the text you want to transfer contains a large number of English characters, you can save space by coding with UTF-8

Ascll,unicode,utf-8