CBSE is literally just the limits and basic derivatives. It's literally Pre-Calculus as it is taught here in the California (Pre-Calculus with Limits, Ron Larson).
With the Chinese curriculum, same story if not at a Sr Secondary School. Here's the curriculum for the Secondary Vocational Schools (aka the schools most Chinese students end up attending) - http://www.moe.gov.cn/jyb_xxgk/s5743/s5744/A07/202001/W02020...
Here's the curriculum for CBSE. https://cbseacademic.nic.in/web_material/CurriculumMain24/Sr...
Most state boards are similar to this.
Similarly most Chinese students end up learning calculus in school.