How to place Yin Cheng's ancestors?

Ancestor tablets can't be placed near the toilet or bathroom, nor can they be hung up for no reason, let alone on the top of the gate.

When placing ancestral tablets, remember not to reverse them. You should put the ancestral tablets in place first, and then put them in place. Remember that ancestral tablets cannot be higher than idols, and ancestral stoves cannot be higher than idols. If there are two ancestral tablets in the family, the main surname should be placed on the left and the deputy surname on the right. It's best to separate them with red lines. Please remember not to put gold or copper in the ancestral stove. If the ancestral tablets are put together with the shrine, don't just incense the ancestral tablets, but also remember to incense the shrine at the same time.