How many books do I need?

The Secret of the Six Yao Yao to Promote Good Luck and Avoid Evil (Resolve), written by Wang Huying

"Top Feng Shui Teaching Materials" written by Wang Jihai

"Lü's Feng Shui" Complete Works of Theory (Part 1, 2, and 2)"

You can also go here to have a look

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Hope Helpful for you