There may be several reasons why Secret Teaching Zihao betrays:

1. Family background: Zihao comes from a relatively poor family, with both his parents dead, making life very difficult. This family background may have led to his distrust and anger towards the world, which in turn prompted his betrayal of his team and his original intentions.

2. Personal Character and Experience: Zihao is a smart and rebellious young man with a strong sense of justice and obsession. However, his sense of justice is often destroyed by the cruelty of reality, which may make him gradually doubt justice and kindness, and begin to think that there is no real justice and kindness in the world, only the law of the weak and the strong. This disappointment and pessimism about human nature may lead to his betrayal of the team.

3. Relationships with other characters: In the novel, Zihao has complex relationships with other characters, including conflicts and contradictions with his classmates. These conflicts and contradictions may lead to his betrayal by reducing his trust and loyalty to the team.

4. Inner Struggle: Zihao has always had the exploration and pursuit of self, but could not find his true self, and was caught in the confusion about himself and the world. This inner struggle may lead him to resort to extreme means to prove his existence and worth, including betraying the team.

In summary, Zihao's betrayal behavior may be the result of several factors*** acting together. These factors include family background, personal character and experience, relationship with other characters, and internal struggle. This story expresses thoughts and appeals to the cause of education through Zihao's betrayal, suggesting that we should pay attention to students' mental health and personal growth in the process of education to avoid getting into trouble.