如果曾經在該帳號有玩過原神的PC上面運行過有下紀錄
可以使用regedit 登路編輯程式
尋找到UID
IF you are playing genshin on PC, you can see ur UID by going into your registry.
Windows + R type "regedit" Folders: HKEY_CURRENTUSER/SOFTWARE/mihoyo/Genshin Impact/ There you will find a file titled "USD<ur uid>_hxxxxxxx