A sticky note is a small, portable paper that has a sticky side and is mostly yellow. In order to cater to the preferences of young people, the company has introduced other bright colors to record some things, such as writing notes and phone numbers. Notes are office supplies, paper, shape, color, and size. Dozens or hundreds of sheets form a stack, which can be pasted anywhere, so as to remind users of problems, ideas, instructions and other things. The market notes are generally composed of three forms: a small note, a medium note, and a creative note to form a note market.