Fortunately, Zhai Sheng's performance did not disappoint him.
Peng Yu could be a good, bad, crooked, or evil one.
Nevertheless, as long as Zhai Sheng was capable and willing to protect Qiao Nan and the three babies, even if Peng Yu was the Great Sage, Heaven's Equal, who had invincible powers, Zhai Sheng would be able to transform into the Gautama Buddha, who could stop him from escaping out of the Wuzhi Hill.
As a man, being able to protect his wife and children was the minimal expectation of him.