"The image of the Buddha is hidden" means asking the big monk to follow the law. When the Buddha statue is opened, the monk will put scriptures, jewels, grains and metal lung and liver into the Buddha statue and seal it. It is particularly important to note that the Buddha statue cannot be used without being hidden, let alone easily opened and hidden.
Generally, the best material is rosewood or sandalwood, with Daphne in the middle and cypress below, and the substitute is fruit tree. If the culture chooses the superior sandalwood as the spindle, it can make the origin represented by the spindle-"home prosperity" have the best origin.