Pay attention to the maintenance of the neck of eighteen arhats with olive core to avoid cracking. Refueling is the key link of maintenance. The frequency of oiling maintenance depends on individual circumstances, as long as you feel that your neck is dry and oily. Therefore, olive core 18 Lohan neck can't be worn in the early stage of hanging, and it can only be worn after it is put out of the dish, and it needs oiling and maintenance when it is worn.