Hold the club in your hand, hold your head up, shake your hand up quickly first, and then suddenly eat a meal.
When the hand shakes upward, the stick moves upward rapidly as a whole; When the hand suddenly moves down, the handle will move down with the hand, but the first two sections still keep the upward movement trend because of inertia, so the handle and the first two sections will form a struggle to complete the stick.
The faster the hand shakes, the stronger the stick locks.