Andy Lau once wrote "Thank you to every teacher in the world, please come on" in his personal diary, recalling that the teacher in his life said: "Without a teacher, there would be no model students; Without teachers, there would be no Andy Lau today. " On the same day, he blew himself up when he held an autograph session for his new album The Voice in Hong Kong. He was misunderstood by the teacher as a member of the underworld and summoned by the anti-gang police.

Hua Zai said that he was not a good student when he was a child, and he was not considerate of his teachers. In the article, he was the first to thank Cai, the subject director of Keli Middle School in the Hong Kong version of Queen's Classroom, and pointed out that Teacher Cai was as terrible as the devil teacher in the Japanese drama Queen's Classroom. In the past, Hua Zai made a mistake and was punished by Mrs. Cai for "recording a big mistake" and "seeing his parents", which led to him being beaten by his mother 18. Hua Zai said that in retrospect today, "the hatred in my heart is gone, and it is replaced by gratitude." However, he blew himself up at the autograph session, was misunderstood by the teacher as a member of the underworld, and was summoned by the anti-gang police. It turned out that Hua Zi and six male students were collectively called "Seven Swords" to protect female students, but they were misunderstood as bad students. However, Hua Zai said in his article that if Cai didn't punish him too severely, he would be brave enough to continue playing truant, unwilling to study and even become a bad student.

Hua Zai also thanked Du Guowei, a geography and drama teacher (a well-known stage and film writer in Hong Kong). "If it weren't for you, I wouldn't be so fond of acting today." At the same time, I also thanked Mr. Wan, the head teacher of Keli Middle School and later the instructor of the wireless training class. An e-card with a new song "Model Student" was also given to the world teachers by Hua Zai. It is reported that Andy Lau recently contacted the teacher who had taught him before, which surprised the teacher.

After the publication of Hua Zi's diary advocating respecting teachers and valuing education, fans left messages afterwards. Some fans said that Huazai's new song "Model Student" wrote the bitterness and helplessness of teachers, and also wrote their persistence in educating the next generation. "I still prefer the teacher-student relationship in the past. I will punish if I am punished, and I will encourage if I am encouraged. " There are also fans involved in discussing the current teacher-student relationship.