What witchcraft does Ma Daopo practice in A Dream of Red Mansions?

1. After Baoyu was scalded by Jia Huan, Aunt Zhao hired Ma Daopo to cast a spell on Baoyu's jade, so Ma Daopo took out two paper men and asked Aunt Zhao to write Baoyu's birthday and put it under Baoyu's bed. I thought it was Ma Daopo who cheated money, but I didn't expect this witchcraft to really work.

2. Later generations have studied the content of this time many times. Some people think it is feudal superstition, while others think it is a magical writing technique unique to the East. These witchcraft techniques had a great market in ancient times, and there were no special regulations until the Qing Dynasty. If someone practices witchcraft, once they are found, they will be punished, which is also in line with the result that Ma Daopo was finally caught practicing witchcraft and finally executed.