Open the album, the album is pulled to the bottom, and the last option is the recycle bin. Opening the recycle bin and emptying everything in the recycle bin can reduce a lot of memory. (Because Xiaomi mobile phone will put the things you deleted into the photo album recycle bin by default, these things are still in the mobile phone, so it will take up a lot of memory and empty everything in the recycle bin, so the memory will be reduced. )