Jiang Cheng is a fictional character from the popular Chinese web novel and animated series Mo Dao Zu Shi, also known as Grandmaster of Demonic Cultivation. He is the leader of the Lanling Jin Sect and is known for his strong sense of responsibility and loyalty to his family and friends. Jiang Cheng is characterized by his serious demeanor and determination to protect his loved ones, often putting their needs above his own. Throughout the series, Jiang Cheng's complex relationship with his brother, Jiang Yanli, and his childhood friend, Wei Wuxian, plays a significant role in his character development. His journey explores themes of loyalty, sacrifice, and the struggle between duty and personal desires, making him a compelling figure in the story.