I took a fancy to a shop, but the salesman told me that the underground of this shop is a septic tank. I hesitated. Is this feng shui good?

Septic tank depends on how you look at it. Personally, I think it's no big deal. Not that everything will bring bad luck. Sometimes you have to trust science correctly. As long as the geographical location is superior and the price is reasonable, it mainly depends on the prospects. Location is everything. Of course, if you really think there is a problem, you can find a feng shui master to look at it and consider it comprehensively. 、