Mr. Du knew that even if he couldn't bear it, he couldn't protect Du Zhilin. Firstly, what he did back then was disgraceful, and now he dared to come back to cause trouble and even hurt him and the old lady.
Du Zhilin was his distant nephew. He studied medicine under Mr. Du for a period of time, forced by his family. Without much talent for medicine, the gap between him and other children widened.
Over time, Du Zhilin's temperament became increasingly strange, often clashing with others. Each time, he would argue even when he was in the wrong, giving Mr. Du constant headaches.
He thought this couldn't go on and found an opportunity to subtly mention it to Du Zhilin's father, hoping they would advise him more.
The result was that Du Zhilin's father, in a fit of anger, beat Du Zhilin, making him hate everyone. The next day, he found a chance to destroy Mr. Du's ancestral manuscripts.
