The Strongest Demon

Huayang, the lowest level casual cultivator in the world of monks. An ordinary hunt for a monster gave him an unexpected gain, which allowed him to practice the demon seal spell inside the monster. From now on... "Is this the magic of the fifth-level advanced monster Wuyan Thunder Eagle? How can you cast it?" A middle-aged Taoist stared at Hua Yang in shock. "No, this is the poisonous flame of the sea dragon..." An old man had disbelief written all over his face. "Ah... Run quickly, this is the breath of a seventh-level monster..."