How to add language tags when code-switching

I want to complete code-switching ASR in Chinese, English and two other low-resource languages, and add language tags. When the language is switched, what should I do? Simply set special_tokens, or do I need to use other methods?

About Fine-tuning model I refer to https://huggingface.co/blog/fine-tune-whisper and https://medium.com/@bofenghuang7/what-i-learned-from-whisper-fine-tuning-event-2a68dab1862 to complete.

I hope someone on the board can help my sister, thank you very much!!