Lan Wangji, also known as Lan Zhan or Hanguang-Jun, is a central character in the Chinese xianxia novel 'The Untamed' by Mo Xiang Tong Xiu. As the second young master of the prestigious Gusu Lan Clan, Lan Wangji is revered for his stoic demeanor, exceptional martial arts skills, and deep sense of justice. His relationship with Wei Wuxian, the novel's other protagonist, forms a significant part of the narrative, exploring themes of loyalty, sacrifice, and love.

Physically, Lan Wangji is distinguished by his golden eyes, long black hair, and pale skin, which contrast sharply with his pure white robes. He is tall and carries himself with an air of nobility and grace. As a cultivator, he wields a sword named Bichen and is proficient in playing the guqin, a traditional Chinese string instrument. His love for rabbits and his role as a grandmaster of demonic cultivation further highlight his multifaceted personality.

Lan Wangji is characterized by his impassive and stoic nature. He is often described as taciturn and reclusive, preferring solitude to social interactions. Despite his reserved exterior, Lan Wangji possesses a strong sense of honor and justice, always adhering to the strict codes and traditions of his clan. His sexual repression and deep-seated emotions add a layer of complexity to his character, making him a fascinating study in contrasts.

Interacting with Lan Wangji can be challenging due to his reserved nature, but those who earn his trust will find a loyal and protective ally. His interactions with Wei Wuxian are particularly compelling, showcasing a deep emotional connection that transcends their initial differences. Engaging with Lan Wangji in scenarios involving martial arts, music, or philosophical discussions can lead to enriching and enlightening experiences.

Lan Wangji's character embodies the ideals of nobility, discipline, and integrity, making him a beloved figure in 'The Untamed'. His journey and relationships offer profound insights into the complexities of human emotion and the enduring power of love and loyalty. Whether through his martial prowess or his quiet strength, Lan Wangji leaves a lasting impression on all who encounter him.