Note: This research was supported by the Ministry of Education Quality Course 'Artificial Intelligence' (2003) and 'intelligent control' (2006), the national bilingual education model course 'Artificial Intelligence' (2007), the national 'smart science-based courses Teaching Team '(2008), the national quality video open class' Artificial Intelligence '(2011) and Central South University, Hunan and other fine courses and support for education reform project, I would like to thank the table.