Because New-Age Feng Shui makes use of a lot of Taoist or Buddhist symbols and deities, such as the Laughing Buddha or statues of Fu, Lu and Shou (Fuk, Luk and Sau), people often think Feng Shui is religious in nature. Classical Feng Shui texts make absolutely no reference to these figures. It is based strictly upon the principles of Yin and Yang, the Ba Gua (Eight Trigrams, also written Pa Kua), the He Tu, the Luo Shu numbers, and the Five Elements, all which have no religious implications.
Feng Shui principles have some cross-over with those of Daoism (Taoism). The Ba Gua, for example, has some application in Daoism, but it is ALSO a mathematical model used to perform Qi calculations in Feng Shui. Similarly, the symbolism of the Big Dipper is common in Daoism, but it is also referenced in the Flying Stars system of Feng Shui.
Chinese Metaphysics are fields of knowledge that do not pertain to any religion, superstitious belief or mythology. Terms such as “Heaven” are merely used to represent astral or cosmic forces.