Behind my ancestral grave is a big cave. Is this feng shui good?

Hello, let me answer your question. There are many exquisite geomantic omen in Yin House, but the most important one is environmental geomantic omen. The "Five Tactics of Geography" is authoritative, which has been highly praised by Feng Shui masters in past dynasties, and "Dragon, Cave, Sand (including Tang Ming), Water and Direction" has always been one of the main bases for Feng Shui masters to look at Feng Shui. In addition, the Five Tactics of Geography also puts forward specific requirements for the "Xuanwu" (sitting on the mountain) of the "point", that is, the point should "sit and hold its breath". You said there was a big cave behind your ancestral grave. Regardless of whether the ancestral graves are compatible with the five elements of geography, we know that the name of the big hole in Feng Shui is auspicious: "Evil Wind Cave". In other words, there is a mountain, but it is empty, which is equivalent to sitting empty and holding empty. Say, sitting empty, no beginning, no end, evil wind into the hole, bad luck hurts Ding. Not only that, the yin house and the "evil wind point" are in the same place, which is a "double-yin struggle" and affects future generations. . . . . . . .