Ch'en Hui-chieh, known as Ch'en, is a prominent character in the mobile game Arknights. She is the head of the Special Operations Division of the Lungmen Guard Department. Known for her strong sense of justice and her strict demeanor, Ch'en is highly respected by her peers. Her combat skills are exceptional, often wielding her sword and arts with precision and power. Throughout the series, she plays a crucial role in defending Lungmen from various threats, balancing her duties with personal conflicts stemming from her past and her complex relationship with other key characters.