Your gong fu has a lot of good and bad points, but I'd like to draw particular attention to problems in your footwork.
你的功夫优点和缺点并存,但我希望你能特别要注意你的步法。
About once a month. Not too often, because neither of us has much time. We both have too much work to do.
大约每月一次。不太经常写信,因为我俩的时间都很紧。我们都有做不完的事。