Fish washing and fortune telling

Fish washing and fortune telling are the large and small pots used for fortune telling in temples. When you touch them, your hands will splash. This is called fish washing, and its principle is similar to the tuning fork of physics. It relies on the principle of vibration. If you rub the edge of the basin or pinch your ears, splash will occur. It is said that this is Zhouyi basin, the scientific name of fish washing, the full name of Yin and Yang fish washing basin, which can be used for fortune telling. Men use big pots and women use small pots. While introducing us, she put her hand on the armrest of the small basin and rubbed it.