When Helian ruolong left, he came back empty handed, because Shi Xiaohai didn't agree with him. To be exact, he didn't agree with Zhang Taiji's intention of reconciliation.

from the moment the four evil spirits entered Los Angeles, the feud between Shi Xiaohai and Zhang Taiji was over. And after Zhang's World War I, the hatred between the two has been difficult to resolve.

so Zhang Taiji's reconciliation is just to stabilize Shi Xiaohai temporarily. When he has solved the Dragon invincible, he will turn his face and kill him. As for Zhang Taiji's character, Shi Xiaohai knows something about it. The narrow mind and bad means of Zhang Taiji's...