At the beginning of heaven and earth, Nuwa used colorful stones to mend the cracks in the sky. One stone was lost on the way, and one stone was left to mend the sky. So she divided the remaining stone into two, one for her daughter's heart and the other for emergencies.
"Lu Feixing, seventh life, I have loved you for six lives, so you owe me six lives. In this seventh life, everything is over. It is destined that we can only live one. It is destined that you live, and you are destined to owe me. In these seven lives, you owe me so much, you will probably never forget me."