A scroll. In Buddhist practice, there is a kind of "silence", through which the practitioner can "settle" his mind. When they settle down carefully, their wisdom will rise.

Recently, I like a sentence very much: stop talking is superior wisdom, stop self-discipline When I was a child, I often regretted it because I blurted it out. Make up your mind secretly, think twice before you speak, and leave half a sentence on your lips.