1. First, take an iron pot, and add dried cypress leaves, mugwort leaves, burning paper, incense, etc.

2. Secondly, clamp the red-hot vinegar altar stone into the iron pot with tongs, and Bai and others will light it immediately.

3. Finally, quickly pour vinegar on it, and then pour boiling water. The wok immediately boiled and made a "squeaky" sound. Pick any stone and break it.