Just Became a Nascent Soul Ancestor, and the Demon God's Descendants Are at My Door?

Chen Xuanqing transmigrated to a fantasy world. He knew the four great stages of cultivation: Ant Stage, Fellow Daoist Stage, Senior Stage, and Time to Make Your Last Words Stage. Stuck at the Ant Stage, he decided to keep his head down and cultivate. At last, after five hundred years of painstaking cultivation, he achieved Nascent Soul Patriarch status just before his life ran out. But his golden finger had only just arrived. [System activated. This System will assist the Host in attaining the supreme immortal path and reigning supreme throughout the ages.] [Descendants of a Demon God are attacking. Host, flee immediately!] Oh, crap! He'd just come out of seclusion and already run into Demon God descendants? But when Chen Qingxuan sensed the arrival's pathetic Foundation Establishment aura, he couldn't stay calm. “System, is something wrong with you?” “They're only at Foundation Establishment, and you're calling them descendants of gods and demons?”