According to legend, after patching up the sky, Nuwa began to make people out of clay. Each time she created a person, she took a grain of sand as a plank, and finally turned it into a huge stone. Nuwa erected it on the bank of the Ling River in the west sky. Because this stone began when the heaven and earth first opened, it received the essence of the sun and the moon, and its spirituality gradually became clear. I don't know how many spring and autumn years passed, but I heard a loud sound in the sky, and a stone thrust straight into the sky, pushing against the cave in the sky, as if it had the intention of breaking out of the sky. Nuwa looked around and was shocked. She saw that after the stone absorbed the essence of the sun and moon, it became top-heavy and upright. It could hold up to the sky. It looked fantastic. It actually had two divine lines that separated the stone into three sections, even though it had the intention of swallowing up the three realms of heaven, earth and man. Nuwa hurriedly used the soul talisman to seal the stone. She thought that after creating a human being, she only lacked the chance of marriage and reincarnation, so she sealed it as a three-life stone, gave it three-life magic power, and named its three sections past life, present life, and next life. She also added a marriage line on it, which would extend from this life to the next life.