I Have a Treasure Door

I have a treasure door. When you think of a treasure door, will you think of Doraemon's random door? Haha, but you will definitely not think that my door is more random than its door. Some treasure doors have any door, but some treasure doors may not have any random door. The treasure door has the functions of time travel, teleportation, cornucopia, etc. The details will be discovered slowly. Speaking of time travel, this is a very interesting function. Do you want to see real dinosaurs, or meet the prosperous Tang Dynasty and drink and have fun with the poets? As for other functions, it's up to your imagination! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.