Under Ye Chen's supervision, Elder Zhao made a Heavenly Dao oath.
Ye Chen would also sense the process of making the Heavenly Dao oath, so this kind of thing could not be faked.
Just like Bai Luoli and Shangguan Xueyan, after they made the Heavenly Dao oath, they could only follow Ye Chen's orders. Ye Chen did not particularly dislike this Elder Zhao.
To be more precise, he should be tactful.
Therefore, Ye Chen did not mind having one more servant.
Moreover, Elder Zhao was right about one thing. It was better to have one more helper in the Transcending Tribulation Realm to kill him.
After Elder Zhao swore the Heavenly Dao oath, the Heavenly Dao oath immediately had an effect on him. Even if he had the slightest intention of rebelling, he would be punished by the Heavenly Dao.
That kind of punishment was even more powerful than the lightning tribulation of becoming an immortal!