Martial Saint: I Became Invincible by Burying Myself

Mu Yuan transmigrates to the final years of the Great Qian dynasty and awakens a golden finger: the [Divine Soul Graveyard].

Whenever someone he has met, and with whom he shares a karmic bond, dies, a grave appears in his sea of consciousness.

Mu Yuan can summon the dead and order them to teach him techniques or serve as sparring partners. He can also peer into their secrets and opportunities.

By using offerings of incense, he can even upgrade the spirits and manifest powerful shadow servants to fight for him.

But incense is hard to come by...

Only good deeds earn red incense, which can be offered to virtuous spirits;

only evil deeds earn black incense, which can be offered to wicked spirits.

Mu Yuan was born with poor aptitude and a lowly background, and should have lived an unremarkable life. But it doesn't matter: with incense, he can defy fate and change his destiny!

But can someone explain why the shortest earthen grave in the center of the graveyard is marked [Mu Yuan's Grave]?