Okay thank you. In fact, I want to know more about MN's building technology, such as single-machine multi-MN.
By single-machine multi-MN, did you mean multiple masternode on a single IP? I tried to google your term but there's no result. Anyway, I never see a single channel (forum) talking about masternode development. Most of the time it's directly related to a specific coin. Reading every masternode WP might be an alternative, but it requires a lot of time.
Good luck in your learning.