I will try to translate although my English not very good😂 there are a few key points: - relax, relax and relax on the wrist - step on the ground firmly but be balance and firm - a big step in for the hit, swing into it with body weight, left foot follow - fully swing, elbow wrapping neck, racquet touches your back but not locking your neck. - use your knee instead of bending your body to lower ball - when hitting the ball, try to hit flatter, only wrist swing "c" - swing with a small "c" instead of a big "c" swing - engage with body weight especially waist / core
