Which novels do you recommend that involve system exchange, system upgrade, ring exchange, and ring upgrade? (Note: Leveling up refers to character leveling up)

Hey, let me recommend you a few books: 1. [The System Begs You to Let Me Go: I Can't Wear It Still]: The System has transmigrated to the upgraded stream, and the protagonist can defeat perverts. She could call herself an empress and beg for food. From then on, Mo Xiaomo embarked on a path of no return where the system pointed him to. 2. " Doomsday Female Supporting Character's Reversal ": Zhang Jingjing transmigrated into a eunuch doomsday novel and became the vicious female supporting character Zhang Jing in the novel " Doomsday Upgrade ", but she obtained the Ascension System. After Zhang Jing gained the female protagonist's good reputation, she eventually became food for the zombies. She had also brought along the somewhat ridiculous " Warrior Training System ". Familiarity with the Plot VS Pork Knuckle Halo, System VS System, who would have the last laugh? 3. [Dragon Ring of the Nine Underworlds: A legendary story triggered by a ring that can be exchanged for anything and anything you want.] The above is my personal recommendation. I sincerely hope that you will like it. If you need other types of recommendations, please feel free to consult me again.