Tutorial on transforming a shoe box into a simple shoe rack. Many people throw away the shoe boxes after buying shoes, which is really a waste. If you add two diagonal lines for easy folding on the two long sides of a traditional shoe box, so that the sides of the shoe box can be flattened inward, it can become an open shoe box; multiple such shoe boxes can be directly stacked It turns into a simple shoe rack, which prevents dust from entering, and the front opening makes it easy to store and retrieve shoes. Hurry up and recycle waste and DIY it!