What is the stem of bamboo in Pan Xiao?

Pan Xiao's bamboo pole refers to the bamboo pole that Pan Jinlian smashed on Ximen Qing's head. Wu Da went out to sell baked wheat cakes and let Pan Jinlian, that is, Pan Xiao, stay at home. Bored, Pan Xiao dropped the bamboo pole supporting the window board and hit Ximen Qing passing by. From then on, love at first sight began, and the doomed love that was entangled in life began.