Vajra Bodhi has a piece of yellow lines on the top, like the yellow tip of the walnut, may I ask the expert this has an effect? I'm not sure if I can get rid of it.

The yellow lines on the vajra bodhi may be due to long-term exposure to air, especially in sweaty and humid environments, which can cause this color change. This change may affect the appearance of the vajra bodhi, but does not affect its value or function.

If you want to try to change this yellow color pattern, you can use some cleaners or bleach to try to remove it. However, these methods may cause damage to the surface of the vajra bodhi, so caution is advised.

Overall, the yellow color pattern on the vajra bodhi will not affect the use of the bodhi or its play, so there is no need to worry too much about it. If you do not wish to see this color change, consider keeping your vajra bodhi in a dry environment and cleaning it regularly to maintain its appearance and value.