People Become Immortals in the Demon Gate

People in the Demon Sect almost become talented people. Fortunately, he had awakened the proficiency panel, and relying on his experience, Lu Yan was able to break through the game and keep getting stronger. As long as there are enough experience points, the most basic spiritual fire can be strong enough to burn everything. LV999, add it to me! (Proficiency panel, don't stress the protagonist's strength, become an immortal all the way)