My understanding of cattle is an idiom story, which is divided into three parts. The first part is that at the beginning of slaughtering cattle, I didn't know the structure of the cattle, but only saw the whole cow. The second part is that three years later, he saw the internal muscles and bones of the cow, and he could never see the whole cow again. The third part is that when you slaughter a cow, you only need to touch the cow's body with your mind, not with your eyes.

Dong: Chef. Ding is the chef's name. Solution: cut open, divide and slaughter. My technician dissected the whole cow. Metaphor after repeated practice, grasp the objective laws of things, do things with ease and use them freely. The pre-Qin Zhuangzhou's "Zhuangzi Health Master": "Knowing is the text to solve the cow, the touch of the hand, the leaning of the shoulder, the trip of the foot, the standing of the knee and the natural standing of the knife are all alto."