Dou Po: I Became the Son-In-Law of the Ancient Clan

Gu Changsheng takes the system to travel through the sky, and as long as he completes the task, he can get heaven-defying rewards. "Main mission: Become the first person of the younger generation of the ancient tribe. Mission reward: Earth-level advanced fighting skill "Heaven Leads Ten Thousand Waves"!" "Main mission: Conquer any kind of strange fire. Mission reward: Earth-level advanced skill "Sky Fire Crossing"." "Side mission: Destroy Gu Xun'er's divine bloodline. Mission reward: An ordinary quality Qingling Pill." … "Wait for the system! I have to do a side mission!" "Are you rushing to complete the mission? I'm so embarrassed to point you out!" The system rarely cursed. This is a story about ordinary people who have obtained the system and are fighting against everything...