Park Choong-Jae (박충재), best known by the stage name Jun Jin (전진) is a South Korean singer and actress under Shinhwa Company and CI Entertainment. He is best known as a member of the K-pop boy group, Shinhwa as a lead rapper, vocalist, and lead dancer.
Jun Jin made his official group debut with Shinhwa on March 24th, 1998 under SM Entertainment. However, he and the group left the company in July 2003. Jun Jin used to sing small parts; when he and Shinhwa signed with Good Entertainment, he advanced and sang a solo song entitled, "Painfully Loving You".
In November 2006, Jun Jin released his first single, "사랑이 오지 않아요" (Love Doesn't Come). In early January 2007, he filmed a music video with Taiwanese singer, Linda Liao. In mid-2007, Jun Jin left his group's company and set up his own company, JF Story Entertainment to concentrate on his solo career more. However, it has been since managed by Open World Entertainment.
On April 26th, 2008, Jun Jin held his first solo concert at Shibuya Public Hall, Tokyo. Jun Jin released his first full-length solo album on April 28th titled, 'The New Decade'. His first single from the album "Wa" unfortunately sparked controversy when the music video was given a 19+ rating due to sexual content.