2. Avoid collisions. In addition, the maintenance of walnuts in Wan Wen needs to avoid bumping against other hard objects, especially in the early stage of pulping of walnuts in Wan Wen. Bumping against other hard objects will easily damage the appearance of walnuts, and even lead to cracking in serious cases.
3. Avoid temperature difference. Wear Wan Wen Walnut at ordinary times to avoid the environment with large temperature difference, otherwise the walnut will crack due to thermal expansion and cold contraction. At the same time, it is necessary to prevent walnuts from being exposed to high temperature or sunlight for a long time, so as to avoid the phenomenon that walnuts crack due to high temperature.