Class CG50Same-level trapInspectpāngHSK 7–9(onom.) bang乒乓球pīngpāngqiútable tennispīngHSK 7–9(onom.) ping; bing乒乓球pīngpāngqiútable tennisThe one-stroke difference:The first stroke is a left-fall in 乒 and a flat horizontal in 乓; every other stroke is the same.Drill this pairWrite the difference