1, Shi Tiandu is sealed.
People who have received a degree from heaven will not tell what they know or lie. If Chulan Zhang accepted the degree of Shi Tian, even if he could know the secret, he couldn't tell Sister Bao, and he couldn't help Sister Bao know her life story. Chulan Zhang later explained that this was inconsistent with Chulan Zhang's purpose of helping Paul discover the secret.
Chulan Zhang also said in his analysis that touts kept his mouth shut, and he couldn't fool himself, and that Shi Tian was like a ban. This has actually been hinted at. However, it may be to keep suspense, or to add "although I'm not sure what will be banned", so this makes the dialogue between the end of the second season and the beginning of the third season seem a little lenient, as if it had never been explained clearly.
2. Chulan Zhang's personality is not suitable.
Even other disciples of Shi Tian and Yu Ling, after thinking that Chulan Zhang will become Shi Tian, said that it is not enough to take responsibility without dignity, and Chulan Zhang himself must know this.
3. Chulan Zhang doesn't want to be bound
As a Shi Tian person, there are more or less burdens and constraints, which Chulan Zhang doesn't like. Even joined the company to protect Bao Er's sister. At first, I was beaten by my sister Bao Er and signed a contract. We can't expect old Shi Tian to do the same thing as Bao Er's sister.
4. The purpose of Chulan Zhang is not to stand on the side of Shi Tian.
He knew that there was someone more suitable to be a teacher that day. Do you remember why he attended Luo Tian University? The root cause is that Bao Er's sister may be entrusted by Xu San Xu Si, so his ambition is not here.
5. While in Shi Tian, old Shi Tian may die.
At this time, Chulan Zhang asked, "What will happen to you?" What did old Shi Tian say? He didn't answer directly, but said, "Why are you both like this?" Then he coaxed Chulan out with a palm. This meaning is obvious.