1, old walnuts basically don't need oiling, so you don't have to worry about cracking as long as you play often. Because old walnuts are rich in oil if they are often played with, too much oiling will lead to blackening, which will affect the patina, but it is not beautiful.

2. Old walnuts don't play often, and there are signs of dryness on the surface. You can oil it properly, dry it with a paper towel to avoid too much oil affecting the patina, and then seal it with a sealed bag.

3. The freshly peeled walnuts contain a lot of water, which is easy to crack due to careless maintenance, so as to avoid the sun and wind. Oiling needs to wait until it is completely dry before brushing oil as needed.

4, oil walnuts, it is best to choose hickory oil in the north, but it is generally difficult to buy. Brush oil can also be replaced by good quality olive oil. At present, there are good quality baby oils commonly used in Wan Wen circle, and it is better to maintain walnuts, olive stones and king kong.

Extended data:

Health care function of Wan Wen walnut

1. Use the spikes, bumps and edges of walnuts to stimulate the reaction areas on the hands by rubbing, kneading, pressing, stabbing, pinching, rolling, pressing and stabbing the acupoints on the palms, so as to achieve the effects of relaxing the pulse, dredging collaterals, promoting blood circulation, removing blood stasis and strengthening the body.

2. The main component of fat contained in walnuts is glyceride linoleic acid, which will not only increase cholesterol after eating, but also reduce the absorption of cholesterol in the intestine. Therefore, it can be used as a tonic for patients with hypertension and arteriosclerosis.

3. Walnut skin is thick and firm. After a long period of manual rubbing, sweat infiltration, oil infiltration and time polishing, it finally becomes a natural art with bright inside and red outside. Agate is not better than agate.

People's Daily Online-Proper maintenance of walnuts in Wan Wen is the first priority.