Not illegal. Yi-ology education is definitely formal. Yi-ology education is a professional educational institution in Jiangxi province, which integrates academic education, skill training and qualification training. The scoring magic weapon of music learning easy test is the rule of the senior high school entrance examination summarized by the set test and the proposition center group; Bringing together the teaching methods of nearly a thousand famous teachers in China; Study Notes of Hundreds of Top College Entrance Examiners in China.