What should I buy to buy a new house and bury it underground to improve Feng Shui?

What should I buy to buy a new house and bury it underground to improve Feng Shui? -the ancients buried things under the house site, mostly referring to things that left things and objects to commemorate. There are some coins at home, so you can put some. If there are no existing coins, there is no need to buy them. Put some beautiful wine bottles or big porcelain bowls, and your descendants will take them out 300 years later, which may be priceless antiques. This is the true meaning of Feng Shui when people put things in the past. I hope that future generations will develop, and I hope that future generations can verify the minds of predecessors.