Transmigrating Through the Shrouding the Heavens Trilogy, I Awaken a Sign-In System

The protagonist, Di Lin, was born in the Primordial Era, formed from the energy of that age and hidden in the bronze coffin inside the Nine Dragons Pulling a Coffin. He had never taken human form. Later, an ambitious 18-year-old from Blue Star worked himself to exhaustion every day, until he suddenly died from overwork. The bronze coffin brought him to the Primordial Era, where he fused with the source power inside the coffin and awakened the Shrouding the Heavens Sign-In System.