你的勾手发的好吗？国手房胤池详解三步发好勾手发球！【字幕】Is your hook serve good? National player Fang Yinchi explains in detail the three-step hook serve! 成为此频道的会员即可获享以下福利： https://www.youtube.com/channel/UCk5--KdCdUvBQg5XVUIruAw/join #pingpong #乒乓球教练 #乒乓球 #TableTennis