1) hit the target in an easy way during the whole technical completion process; 2) Twist your waist and send your hips, keep your body and retreat a line. 3) If you don't practice middle and low legs well, you'd better not practice high legs, because it will make your high legs look weak. 4) Ligaments must be pulled apart, and you can't stand tall easily without pulling apart. 5) persevere. Without perseverance, it is still a dream in the end.