1. Observation: First observe the appearance of the bracelet. If the color of the bracelet becomes darker or spots appear, it may be because of the influence of hand sweat. If this happens, you can try the following steps to remedy it.

2. Cleaning: Gently wipe the surface of the bracelet with soft cotton cloth or gauze. Be careful not to use rough cloth to avoid scratching the surface of the bracelet.

3. Maintenance: In order to keep the luster and color of the bracelet, you can coat it with a thin layer of natural vegetable oil, such as olive oil or walnut oil. Remember not to use chemical grease to avoid damaging nanmu.

4. Play: If you want to continue playing bracelets, you can wear cotton gloves to avoid the influence of hand sweat on bracelets. After each game, remember to put the bracelet in a dry and ventilated place to avoid direct sunlight.

5. Professional advice: If you are not sure about your handling method, or the appearance of the bracelet changes greatly, you can seek the advice of a professional jeweler. They may provide more specific instructions or maintenance plans.

In any case, the golden nanmu bracelet is a precious ornament and needs careful care. Although this mistake may have a certain impact on it, its value will not be greatly reduced as long as it is handled properly.