Put away your tears and turn grief into strength. Buy a set of building blocks, draw a single one first, and then draw the assembly. Draw shapes in all directions. After painting, look at the picture and imagine the shape of the original building block, draw over and over again, think over and over again, and learn the prescribed drawing method of mechanical drawing. Soon, your mind will accumulate a lot of signals about the transformation between pictures and things, and at this time your brain will gradually get excited. The gradually developed spatial imagination ability will make you interested in mechanical drawing, your IQ will be greatly improved, and you will laugh through tears. There are roads and mountains, so I want to draw more pictures and make a boat. This move is very clever. Just try it.