Han Blood Book

In ancient times, the three clans of Longfang, Gaoxin and Dituo abided by the covenant of abandoning the world and respected the royal family equally. They could not bow to the emperor when they saw him. The sun on the grassland, the blood contract of the ancestral dragon, and the evil desire for immortality awakened the ancient demon, the ancient vampire from the East, and came to the world again. A young man with a blood contract, the legacy of the mysterious imperial clan, embarks on a journey to analyze the truth of ancient legends step by step.