The only classes on
CAESAR II are given by COADE. I'm sure you can search the site for information, although I don't know if they give classes in China.
Basic texts on the general subject of piping design and analysis are available. The ones I have include
Design of Piping Systems, 2nd edition, M.W. Kellogg
Process Piping, Becht
Piping Design and Engineering, Grinnell
There are also on-line courses available from the ASME (
www.asme.org), with other textbooks that you can order from them.
This is a field of study that is best learned from experienced co-workers. If you don't have such a person available to you, I wish you luck. You're going to need it.