He developped a popular English teaching method.
This method is called Li Yang crazy english. This method emphasizes teaching to large group of students: make them repeat, sing, shout while using signs, different voice intonations. This method also uses some mnemonics means as playing with similar Chinese English sentences pronounciation.
This teaching method fits well Chinese students psychologie:
Group work, repeatition, shouting, collective huge meetings, expressing yourself, fighting your timidity...
But you can see for yourself: