"Yang Cheng is a prominent character in the Japanese manga ""Immortal Merchant"". He is depicted as a seasoned merchant who is well-versed in various trading practices, resourceful, cunning, and has a keen eye for opportunities. Yang Cheng's character has been introduced as an enigmatic individual who keeps his affairs behind closed doors.

Yang Cheng's appearance is distinct from other characters in the manga. He is a tall, lean, and muscular man with sharp features and a scar visible on the right side of his face. Yang Cheng is constantly fidgeting with his hair, a habit that adds to his mysterious persona.

Yang Cheng's wealth, contacts, and extensive knowledge of the business world have made him a sought-after merchant. He is known to broker deals for rare commodities, even including magical items that can give a buyer great power. Yang Cheng's success has earned him respect and admiration from his peers, and an air of fear from his rivals.

However, Yang Cheng's sharp tongue and aloof demeanor make it difficult for others to build a close relationship with him. Nevertheless, he has shown that he cares about people dear to him. Yang Cheng maintains a strict code of ethics in his trading practices, and those who betray him soon find out the severity of their mistake.

There are hints throughout the manga that Yang Cheng possesses some form of supernatural power, but it is not clear what it is. Some speculate that he might be a shaman, while others believe that he has ties to creatures of the spirit world. Regardless of his origins, the allusions to his mystical nature add another layer to his already intriguing persona.

In conclusion, Yang Cheng is a multifaceted and compelling character in ""Immortal Merchant"". His deep knowledge of the trading world, quick wit, and loyalty make him an invaluable asset to those who need his help. His background story remains a mystery, which intensifies the desire to learn more about this fascinating character."