1. Respect the choice of the opposite door: couplets are a traditional culture, and everyone has their own favorite couplets. You can respect the choice of the right door, don't criticize and accuse.
2. Communicate with each other: If you are interested in the couplets of "Purple Gas from the East", you can communicate with each other to understand the background and meaning of the couplets, which can increase mutual understanding and communication.
3. Post your own couplets: If you want to post your own couplets, you can choose couplets that are different from other neighbors, which can show your personality and cultural accomplishment.
No matter which way you choose, you should respect the traditional culture and the rules of couplets and pay attention to etiquette.