I've Become an Immortal, and You Want Me to Throw Punches?

[High Martial] [Spiritual Qi Revival] Lin Mu transmigrates to a High Martial world. His original body's aptitude is average, with no foundation in martial arts. He thought he would live an ordinary, unremarkable life. But then he binds the Immortal King System! [This System will design the perfect plan for you to become an immortal!] Hearing the System's voice in his mind and seeing his classmates grappling barehanded with demonic beasts, Lin Mu stares in shock and confusion. I'm supposed to cultivate immortality in a High Martial world? The moment he steps into school, the System's voice rings out: [Congratulations, Host, on successfully joining a sect. Reward: the Qi Refining technique Everlasting Spring Art and one hundred random talismans.] When he joins the school team, the System speaks again: [Congratulations, Host, on becoming an inner sect disciple. Reward: a Foundation Establishment technique and the Sword-Flying Art.] When he slays the rampaging ferocious beasts, the System announces: [Congratulations, Host, on slaying a top-grade demonic beast. Reward: a demonic beast core and the Encyclopedia of Alchemy Basics.] When he distinguishes himself in the martial arts exam, the System announces: [Congratulations, Host, on taking first place in the sect tournament. Reward: a Core Formation technique and the Art of Aerial Flight.] … Many years later, on the battlefield of ages. Everyone gazes at the youth striding through the air with envy and longing. But the moment they see his face, his classmates erupt: You've become an immortal, and we're still throwing punches?!