The Sons of Heaven all are essential treasures of the Five Thearchs. Each has its moment of inception; they succeed each other, arising in accord with the sequence of epochs. They must possess the talismans and ledgers of the spirits and numina; then the various spirits will aid and assist them and cause the inauguration of the throne and the establishment of the way. All rulers should place charts and registers (tulu 圖錄) at their side, and thereby rectify themselves.1