Guo Zi Fan, born in Qingdao, Shandong province, is a Chinese singer-actor, and a member of the Chinese male pop group "X-NINE".

In 2015 while still in high school, after participating in the youth network drama "Seventeen Blue", he joined Zhejiang Satellite TV "Burning Boy" youth talent program to become a trainee of Tianyu, and was screened to become one of the 16 recorded program contestants, thus making his official entry into showbiz.

In February 2016, he and his team mates, namely Wu Jiacheng, Gu Jiacheng and Zhao Lei, debuted officially as "X-Fire". In September of same year, Guo participated in the "X-Nine Youth League" debut conference, marking his official debut as a dancer at the same time.

In 2017, he was admitted to the Beijing Film Academy with the first place in the performance department in the country.

　　1997年7月11日出生于山东省青岛市，中国内地男歌手、演员、中国男子唱跳团体X玖少年团成员。2015年，参加浙江卫视《燃烧吧少年》节目出道；2016年4月，参演校园星座超能力网络剧《超星星学园》；同年9月，以舞蹈担当的身份成为“X玖少年团”成员之一。2017年以第一名成绩考入北京电影学院。同年11月29日，郭子凡作为北京电影学院学生代表之一参与录制的《中国梦》青春版MV发布。主演都市情感励志剧《小欢喜》，合作导演汪俊，著名演员黄磊、海清、陶虹、王砚辉等。2019年4月，出演《极限17:滑魂》男一号。同年主演由爱奇艺、北京五元文化传媒有限公司出品轻科幻冒险悬疑剧《致命愿望》，合作演员冯绍峰、文淇、范丞丞等。2020年7月客串出演黄建新、郑大圣执导，黄轩、倪妮、刘昊然等主演电影《1921》。