just buy a radish jar with a diameter of 22 cm.

For a family of three, it is enough to buy an altar with a height of 25 cm, and the mouth of the altar goes straight through the 22 cm Sheung Shui altar. If the jar is full, it will last for a long time, which is convenient and practical.

cylinder: a cylindrical container made of clay, porcelain clay, glass, etc., with a big mouth and a small bottom.