The heaven and earth can be seen in a square inch, and the universe can be seen in the smallest details. The meaning of this sentence is that people have very simple ideas at the beginning and have no big ambitions. The craftsmen already know it well when they are working, and every inch of work has been arranged mentally by the craftsmen. A true practitioner must be a beneficiary of the spirit of craftsmanship and replace the impetuous and utilitarian view of work with the values ??of cultivation. Spending your life doing something is pure greatness.