I want to work part-time in Xinxiang city.

You can recommend yourself, post small advertisements, say that you are a kindergarten teacher, you can tutor and so on. You can also register a website like People's Daily Online, and go online to find the one that suits you. First of all, let me remind you that the authenticity of such websites depends on your own judgment. Everything that pays money is fake and needs to be guarded against. Please pay attention.