怎么发出让对方难接的下旋球

How to serve a downward spinning ball that is difficult for the opponent to catch

[@sl888li5]

小韓老師教得非常好，學生容易明白和跟隨練習，感謝感謝！

[@junx6250]

人漂亮，讲的好。切中要害。业余选手步伐都差，所以落点比旋转更重要！

[@TTFrance]

你好，我喜欢你的视频 !! 加油 🙂 My chinese is not so good, so, thank you for the english subtiles !!

[@pingpong6868]

my pleasure

[@МейрамБайкасымов-ь7л]

Я твой фанат и учусь у тебя корректирую технику