Prehistoric: Golden Crow Lingtian Rescues Nuwa at the Beginning

[Prehistoric + system + single or no female protagonist + practice and upgrade...] The ordinary Buddhist people in this world were actually killed by the heat of air conditioners, thus traveling through the "prehistoric times". Equipped with the standard system, he was reincarnated into the "Innate Three-Legged Golden Crow", the innate sacred heel, and became the brother of two tragic mythical characters, Emperor Jun and Taiyi! "What, you are Nuwa?!" … "Are you the ancestral witches?!" … "The 'Golden Lotus of Twelve Grades of Merit' in your hand is destined to me, and I hope that fellow Taoist will not hesitate to give it to me!" … Save Nuwa, search for spiritual treasures, seek merit, and fight against great powers... In the ancient times, the waves were magnificent!