TDA, Sour, YYB, Cham, and Montecore are some of the most popular model types people like to use for models, but some of their rules can be confusing and are often broken (whether intentional or not). What are the rules of TDA/Sour/YYB/Cham/Montecore models? What do these rules mean? How can I avoid breaking them? Rules of Common MMD Models…