Prehistoric: the Thirteen Ancestral Witches, at the Beginning, They Advised Their Brothers to Stay

Wu Tian traveled through the ancient world and became the thirteenth ancestral witch outside of heaven. The Lich's death situation was before him, and he scratched his head and thought hard - fighting hard would lead to death, and retreating to the underworld to watch the demons and saints bite each other was the only way to survive! How can I persuade twelve brothers and sisters with bad tempers to listen to me?