We will separate

 Old Master Zhi indeed had some hope when his son went to look for Zi Qian. After all, who did Yu Dong think she was fooling? She was Ye Zexian's sister-in-law, surely she would not sign such a strict contract with Zi Mu and Ye Zexian.

She was most probably trying to fool them by saying that Zi Mu was in debt by signing the contract with her. 

However just as Zi De returned with a panicked look on his face, Old Master Zi suddenly felt his heart jump a beat. However, he did not know what happened or what Zi Qian said to Zi De given that his son hardly looked like he was in trouble. Zi Mu had always cared for his brothers thus, the two brothers of the Zi family did not even know what trouble was, this was their first time facing trouble and that too because of their reliable younger brother! 

"What happened?" Old Master Zi asked when Zi De came to a stop in front of him. "Why are you looking like we are in big trouble?"