How to know the direction of weight

"Navel" This was the biggest hint I got from my teacher. It is neither a fingerboard nor a backboard. It was a deeper, more imaginative place. Weight is essential to play the cello. In what way should we physically feel the weight? It is very interesting to see how the structure of the cello and the structure of our body that plays it can be combined to maximize the power. When we make a mistake in our left hand, we use our grip strength and the energy towards the inside of our palms works. It is good practice to hit the fingerboard to avoid this. Or, you may face your thumb and crack and sound. At this time, it is better to stretch your fingers a little and swing down from the base of your fingers. As for your right hand, it's best to wrap the bow in your palm and play it. Forget the so-called "how to hold a bow" and concentrate on how the weight is carried. Ah, was my arm so heavy? The position of the fingertip and the bending method should be next.