Chen, an ear plastic surgeon, said: "To make an ear into an elf ear, you need to remove the cartilage at the tip of the ear to make the original arc angular, and then take out some cartilage from the auricle and add it to the tip of the ear for plastic surgery." Dr. Chen said that because the operation was done from behind the ear, the scar was not obvious, and the recovery period of the operation was about one week. During this period, it is necessary to avoid the ear from violent collision and prevent the ear from collapsing. "This is a permanent plastic surgery. If the customer wants to restore the original shape of the ear in the future, he needs to do another operation to remove the cartilage and readjust the shape of the ear. "