What tactics did the Kuomintang and warlords use to halt the Japanese advance

Can you guys please do an in depth look at the Chinese army and how it adapted to deal with Japan. China was one of the largest contributor in terms of losses in the Second World War yet a lot of there actions are less known. Furthermore japan was an empire capable of taking on some of the worlds largest powers all be it temporary. I would really love to learn about what the Chinese were thinking in terms of strategy tactics and overall doctrines plus which figures aside from stillwell and Chennault were influential in halting the Japanese.