Can the basement be converted into a restaurant? Essential knowledge of geomantic omen in basement

It is generally not recommended to change. As we all know, wet and cold air flows downward and warm and dry air rises. Downward airflow is negative and upward airflow is positive. Wherever the mountain is on the top, the gas field will gather, and all the dirty gas and miasma will accumulate below the horizon. So making a restaurant in the basement is not the best choice.