Idris asked for enlightenment, and Jibril proceeded to draw a geomantic figure. According to the geomantic theory of Huizhou businesspeople, water was the resource of money. Specialized machines have also been used to generate full geomantic charts. Life Aspirations is not otherwise a geomantic system. Upon being asked what he was doing, Jibril instructed Idris in the geomantic arts. Another classification of the geomantic figures involves their quality, which is either "stable" or "mobile". The 16 geomantic figures are the primary symbols used in divinatory geomancy. For his authorities Cattan names particularly three Geomantic texts of importance to him.