File and folder names can't be longer than 255 UTF-8 code units in Linux, which means they can contain 255 US-ASCII characters, but only 127 Cyrillic characters

File and folder names can't be longer than 255 UTF-8 code units in Linux, which means they can contain 255 US-ASCII characters, but only 127 Cyrillic characters, 85 Chinese characters, or 63 emoji. In Windows it's different, because file names can contain up to 255 UTF-16 code units. This is 255 characters in almost every language (but only 127 emoji.) So, if you create a file name with 100 Chinese characters in Windows, you can't transfer it to Linux (or upload it to a Linux web server, for example.) Windows, on the other hand, has problems when the full path to the file (eg. C:\folder\file) is more than 259 UTF-16 code units, but it's getting better at this, and newer Windows apps normally handle longer paths just fine.