What was exchanged for Mobile Li Sen was found on the special shelf of Nook store. In the "Animal Forest Friends' Association", the exchanged items can be found on the special shelf of Nook Store, located on the right side of Nook Store, with the sign of "Special Shelf" on it. On special shelves, you can exchange Nook Miles for various items, including furniture, clothes, tools and so on. Different items need different Nook Miles, and you can choose according to your own needs and preferences. It should be noted that Nook miles are earned by completing tasks and activities. You can check your Nook mileage balance on the Nook mobile phone in the game.