The way of heaven is not a law of nature - it was created by a powerful man named "Yi" thousands of years ago. He created a chess game and became the chess player himself. However, after playing a few moves, he found that he could not win his own game, so he let Tiandao take over the chess player position. The fragments of Yi's consciousness are scattered among the remaining luck of the 99 ascended people. Every ray of fate of the Destiny Child that Su Yan swallowed was piecing together Yi's memories. The seventh step is to "lift the chessboard" - not to expose it to Heaven, but to expose it to Yi.