It will come down to what you’re capable of:
- How easily can you navigate Chengdu, and what is your ability to live frugally like?
- Are you a qualified teacher? Do you know students, or have connections to schools? If so, finding work, even part time, should be no issue.
For those reasons it’s hard to generalize, but it’s definitely possible. You can live in Chengdu on 4-5,000 rmb per month, it’s more a question of your own ability to keep your costs down. If you don’t speak Chinese, consider this an investment in your future in China (if that’s a factor for you). Learning Chinese will open a lot of doors: socially, professionally and so on.