Jeong started her career winning the prize in the 2012 Korea Story Contest, with [100 Days of Youth]. In 2018, she also won the gold prize with [I am the killer] in the Mystery thriller contest held by CJ E&M and Kakao Page. Jeong has a collection of novels including [Double](exported to China, Taiwan), the “day” series including [The day of the kidnapping], [Who was killed], and [Suspects]. [The day of the kidnapping] was adapted as a popular drama series. Jeong’s strong points are considered to be her easy writing style and her view of evil which she states as “I like to imagine the evil intentions hiding behind what poises as truthfulness, and the depravity of the human mind.” Her works are viewed as amazing page-turners and are anticipated by a wide audience.