The Beginning of the Prehistoric Era Became the Way of Heaven

A certain Wuwei monk Qingxu escaped into the six realms of reincarnation after his lifespan was exhausted. However, he was tied to the system before he even arrived in the underworld, and then... He became the heaven?! Send down your merits, cultivate in your avatar, find a spokesperson for heaven, control the entire prehistoric world, and then use your avatar to slap some unscrupulous monks in the face! But... How can I let my clone master this treasure?