Screwing screws and building blocks are good action games. According to relevant public information, fine movements refer to the movements that the baby completes with the small muscle groups of hands and fingers on weekdays, such as grasping, pinching, patting, twisting and tearing. , such as picking up objects, building blocks, doodling, turning pages and writing on the ground with your thumb and forefinger. These skills include wrist, hand and finger movements.