However, it was often impossible for more distant locales, like Fujian and Guangdong, to receive the official almanac in a timely fashion. Attracted by economic incentives, local practitioners of the occult began privately publishing their own books; these included much additional material on the rules for occult calculations.
然而天高皇帝遠，官印曆書經常無法及時送到偏遠的閩、粵等地，當地術士遂在經濟誘因下，開始私印加了許多術數規則的通書。