Fengshui, wind and water, is the siting art, and it applies to houses, businesses, cities and — most seriously in the tradition's own terms — graves, since an ancestor badly placed will not prosper the descendants. The practitioner uses a luopan, a compass with concentric rings encoding directions, trigrams, stars, phases and calendrical cycles, together with the client's birth data and the form of the surrounding land, to fix orientations and auspicious dates. Its contemporary standing is not a matter of folklore: Hong Kong, Taiwanese and Singaporean developers routinely commission consultations, banks and hotels have been redesigned on the advice, and the famous stories about Hong Kong's HSBC and Bank of China towers are widely repeated because everyone recognises the logic. Mainland Chinese policy has been ambivalent, classifying it as superstition while tolerating it in practice. It sits inside Taoism loosely — many practitioners are not Taoist priests — but it runs on the same qi cosmology.