Why is grandpa pretending to be crazy when the general is here?

That’s crazy.

1. In the TV series "The General", Grandpa's father, brother, son and grandson died in the border war and became crazy due to stimulation.

2. "The General is Above" is produced by Xingge Media, starring Ma Sichun and Sheng Yilun. The play is adapted from the novel "The General is Above, I am Below" by Ju Hua Sanli, and is based on the situation of the Song Dynasty. It tells the story of a misplaced legendary love story between a cold-faced female general who excels in martial arts and the charming good-for-nothing Prince Qiao. It was released on October 25, 2017.