As the Taoist saying went, " All things are negative and positive, and the surging of qi is harmonious. " This meant that the two qi of yin and yang combined to form all things. Whether or not all things were synthesized in this way was not discussed, but the Taoist ability to borrow the qi of heaven and earth was very strong, and talismans were one of them.
If an ordinary Taoist wanted to draw a talisman, it would be very laborious. He had to set up an altar, clear his distracting thoughts, focus his mind, clean his heart, body, face, hands, and rinse his mouth. He also had to prepare many sacrifices before he could start drawing under the condition of extreme concentration. Otherwise, the thing he drew would only have the appearance and no effect. More seriously, it might even be harmful, because if the talisman gall could not be suppressed, some evil would enter the talisman.
But to Xia Ji,
It seemed easy.
He didn't even want the yellow paper.