李知恩（이지은/Lee Ji Eun），艺名IU，韩国女歌手、演员、主持人。
Li Zhien (/ Lee Ji Eun), stage name IU, Korean female singer, actor and host.
Born on May 16, 1993 in Seoul special city, South Korea, I like listening to music very much from kindergarten. I often sing karaoke with my father. In the first grade of middle school, she stood on the stage of school performance with the recommendation of her PE teacher. From that moment on, she had the idea of becoming a singer.
她曾先后参加20次选拔，其中包括JYP Entertainment举办的练习生选拔，均被拒绝。2007年10月，她通过了LOEN Entertainment的试镜，开始为期10个月的练习生生活，在此期间得到了夏东均等不少音乐人的帮助 。
She has participated in 20 selections, including the trainee selection held by JYP entertainment, and was rejected. In October 2007, she passed the audition of loen entertainment and began to live as a trainee for 10 months. During this period, she got the help of many musicians from Xiadong.
2008年9月，在Mnet音乐节目《M! Countdown》中演唱歌曲《迷儿》，正式出道；随后发行首张迷你专辑《Lost And Found》 。
In September 2008, he sang "fan Er" in Mnet music program "m! Countdown", and then released his first mini album "lost and found".
In 2009, he released his first regular album growing up and his mini album IU... Im in November of the same year.
In 2010, the mini album "real" was released, and the main song "good day" topped the Korean gaon list for five consecutive weeks.
In 2011, he released his second regular album "last fantasy", with a total of 17 million downloads.
In 2012, it ranked third in the Forbes celebrity list of South Korea.
In 2013, the third regular album "modern times" released showed a variety of song styles.
In 2014, he released the cover album flower bookmark, and won the first place in the South Korean Gallup survey singer department and the best female singer award of the 16th Mnet Asian Music Award in the same year.
In 2015, he released the mini album "chat-shire" and was recognized as the leader of the top 100 pop music lists in South Korea by "billboard"; in the same year, he won the state Premier's commendation award of South Korea's popular culture and Art Award.
In 2017, the fourth regular album "palette" and the second cover album "flower bookmark 2" were released.
In 2011, he played in the campus drama dream high and became the regular host of SBS music program popular songs.
In 2013, with the weekend drama "best Li Shunxin", she won the new actress award of KBS.
In 2015, he starred in KBS golden land drama producer.
In 2016, he starred in the costume through "step by step: Li".
In 2017, she won the best female singer award of mama in 2017.
In 2018, he won the South Korea golden Record Award.
In 2019, he will star in the movie persona for the first time and the TVN love fantasy show Hotel DeLuna.
On January 4, 2021, Li Zhien entered the Oriental beauty website.
Li Zhien's stage name is IU, in which "I" refers to himself and "U" refers to the audience, which means that he hopes to be with the audience forever and that his singing can resonate with the audience.