The protagonist Lu Yan's superficial identity is: a "civilian" archeology student/little anchor who is ostracized by his peers and firmly believes in the reality of myths and history.
And his real golden finger is: the ability he unexpectedly acquired is not to fight, but to be "psychic" - by touching ancient objects, he can "read" and "live broadcast" the ancient mythological memories they carry as if they were there.
When others were practicing meditation, he gained strength by "interpreting history". Others relied on aura to practice, and he became stronger by..."Cultural output" and "power of faith."