You Just Turned into a Dragon. What Do You Regret, Saint?

Thousands of years ago, Ye Feng traveled across the Eastern Wilderness Continent and became a little snake demon. Thousands of years later, Ye Feng, who transformed from a snake into a dragon, became the guardian beast of the Yuntian Sect. He has been guarding Yuntian Sect for nearly a thousand years, and his body is Tongxuan Jiao. Ye Feng has both merit and hard work! However, the Saint of Yuntian Sect united with Prince Tengyun in order to obtain Ye Feng's Dragon Pill! Poisoned and strengthened enemies? Making Ye Feng invincible! Crucial moment? The system that is a thousand years late is here! [Choice 1, not bound to the system, 99% of the host will die! [Option 2, bind the system, and the host will gain the Nascent Soul Stage cultivation level! Two options? Ye Feng chose the second choice without any doubt! Suddenly, Ye Feng transformed into a real dragon and achieved the Nascent Soul stage! Ye Feng: "Saint girl, right? I heard that you covet my inner elixir? Why don't I give it to you? Come on, come into my belly!" Saint: "Don't come over!" I didn't get the dragon pill, so it turned into dragon dung.