Btw, what does "hands hit 3, legs hit 7" mean?
I believe it describes a ratio of 3 to 7. There should always be at least 2 points of contact, hand and leg, usually 3 or more points though like the hand and the upper part of the arm, the supporting hand (fu shou), more parts of the leg and foot etc. and the subtle leg attacks or successful contact of leg hitting opponent's leg is higher than the hands landing, which also shows the importance of the legs and stepping. In many situations if the hands are countered one just has to take a step to counter attack.
Bagua has some deep leg skills that aren't like kicks. The only real implement training I've heard of is putting a large bag of rice on the forward thigh and trying to get the extremely short jin of the leg/knee which is a bursting forward force called 'beng', this is used in all the 'shun bu' type strikes. It's possibly the hardest skill to learn that I've come across but one of the most important. It's real short, meaning the knee/leg barely moves but the bag of rice should be sent flying. This is used usually towards the side or back of the opponents leg again at the same time as the hand is landing.
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