Roll "a thousand pounds of wrist". This method can greatly improve the hand grip strength and enhance the hand grip strength endurance, but it is quite laborious to exercise. After each exercise, you must persevere and completely relax your forearm. You can increase the weight tied to the rope to improve the strength. When the weight is 5 kg, the length of the rope is 1.2 m, and it can be rolled back and forth twice in one breath. At this time, the right hand can crush ordinary teacups.