(Why do more and more people find design difficult to do because they don't keep up with the speed of iteration. The connection between them will be found only after work. It is a particularly lucky thing to have art skills. The luck mentioned here is certainly not painting oil paintings and sketches at work, but when you get a design scheme, you can draw a draft immediately by hand and intuitively show your ideas to customers and leaders. If the draft direction is wrong, you can adjust the direction in time to avoid useless work and greatly improve the work efficiency.)