Li Jian didn't go to the Conservatory because he didn't pass the exam. Many excellent singers, such as Jay Chou, Emil Wakin Chau, Yu-Ching Fei and Zhu Zhiwen, have not received strict professional training. However, they have good voice conditions, and they are born with excellent musical feelings and opportunities to become great musicians. There are many such people. These people, such as Li Jian, also like singing on the road of life, and found that they can sing and become famous gradually. However, it should be noted that the tenor, soprano, baritone and mezzo-soprano of Bel Canto all need professional music education in music colleges.