Yang Houses, Yin Houses, and the Dragon

Every house has a dragon, and it has a head and a tail

A yang house wraps yang energy around a core of yin; a yin house suppresses yang with yin. This pattern is called the dragon. In a yang house the dragon's head lies at Hai, its tail at Si; in a yin house the two are reversed.

Then comes a rule you can act on. Moving from Xun towards Qian, from Wu towards Zi, from Kun towards Gen, from You towards Mao, from Xu towards Chen — these are counted as entering yang. The reverse movements — from Qian towards Xun, from Zi towards Wu, and so on — are counted as entering yin. Keep entering yang and the house gains strength; enter yin and yang repeatedly and the text says the house loses its 'soul' and 'spirit', and the line ends.

The constructive half: keep the position of virtue clean, spacious and well-built, and time the work to the seasons when the life-giving energy arrives there. The text calls this position the house's 'wealth and destiny' — look after it and there is nothing to fear.

A fair note for a modern reader: the language of souls and extinct lineages is the rhetoric of its time. What survives the translation is the practical rule — orient your improvements consistently in one direction rather than flipping back and forth, and maintain one part of the property as genuinely well-kept.