C571 Step Back

Ignoring Sun Lin, Mu Yan stared at Old Master Mu. Clearly, he only recognized what he said.

He rubbed his temples, which were faintly aching. Old Master Mu had never felt that something was so difficult to handle.

Even when Lin Xingxi's "substitute" was a problem, he did not have such a headache.

"If I don't agree, won't Lin Siyan be my great-grandson?" Old Master Mu asked back