If Qiao Nan didn't convince the Zhai family and Zhai Sheng, she wouldn't have the chance to be the chief's wife in this lifetime. On the contrary, if Qiao Nan was willing to help her, she would have half succeeded first. Under Qiao Nan's persuasion, once Zhai Sheng agreed to it, she wouldn't be able to escape from the position of the chief's wife.
On the contrary, if Qiao Nan didn't help her, even if she didn't stop her and let her try based on her own abilities, she would definitely not be able to succeed.
"Based on what you're saying, only Qiao Nan can help you. How can I help you?" The Zhai family didn't want to see her. If she asked Zhai Sheng to marry Zijin, would he listen? No!