A question from beginner: How Chinese chars converted in the vocab?

[Adenialzz]

I notice that in deepseek (llama) vocab, there is no Chinese chars in that, instead of something like åIJ¦, and that can be decoded to Chinese 否. I wonder how this happened. I have checked the source code in transformers and did not find the implementation about this.

(Pdb) mllm.tokenizer.convert_ids_to_tokens(3636)
'åIJ¦'
(Pdb) mllm.tokenizer.decode([3636])
'否'
(Pdb)