Is it okay to use an open flame in the kitchen of a convenience store?

Open flames can be used in the kitchen.

There is a special kitchen, and you can use an open flame.

An open flame refers to a fire lit by concentrated sunlight reflected by a bronze mirror during ancient sacrifice or divination. Bright fire. It's called public robbery. In ancient times, when offering sacrifices or divination, the convex lens was used to reflect sunlight and ignite the fire. From "Four Beginnings of Qiu Guan, Zhou Li": "Four Beginnings make fire in the sun and take water under the moon. 」