Jade stick, called water board in ancient times, is a tool for ancient officials to go to the temple to meet the monarch. Also known as hand board, jade board or decorative board. In ancient times, when ministers of civil and military affairs appeared in front of the king, they held a water bowl in their hands to record the king's life or will, and they could also record the words to be played to the king on the water bowl.

Jade sticks, known as ancient water boards, were tools for ancient officials to go to the temple to meet the monarch. Also known as hand board, jade board or decorative board. In ancient times, when ministers of civil and military affairs appeared in front of the king, they held a water bowl in their hands to record the king's life or will, and they could also record the words to be played to the king on the water bowl.