I believe many people are like me, when you have to wait for customer service, you will feel bored. If only there was a book in hand at this moment. Now, Korean designer Sang-Hoon Lee has helped us kill boring time. In fact, it is a very simple design, but quite practical. Together with its concise and fashionable elements, if we put it in the customer service area, I think I might go there often just to sit.