Bamboo stick is a stick made of bamboo, which can be used to tie food or bunch flowers. Post-it notes are software that can record all kinds of things on mobile phones. Signing is to confirm the information and sign for it. Signing a contract means that an author or singer signs a contract to sell his own works, audio-visual products, etc. Signing is writing your name.
To sign is to write your name on a document, a small bamboo or wooden sign. The idiom "thousands of tea makers" means that there are many books. Toothpick rhinoceros axis means the label and scroll of ancient books. Borrow books. Describe the exquisiteness of the book. Same as "Toothpick Jade Axis".