Hi @SherlockYibo, as I understand it the LSST Science Pipelines can (in theory) be applied to data from other telescopes and instruments (like HSC, as you know). But whether any particular data set (or simulated data set) is compatible with the processing software is, as far as I know, something that can only be figured out by trying to do it. There are some “getting started” instructions available at pipelines.lsst.io, and it would be great to hear back about what you tried and how it worked.
If anyone else who has attempted to process CSST data (or similar) with the LSST Science Pipelines finds this thread, please feel free to chime in.