Fan & Star, a site that delivers idol ranking information, hold a special event for Roh Tae-hyun on December 10th. It is a large advertising project to celebrate his birthday on January 24th.

The success of Roh Tae-hyun's birthday project will be determined by the number of rainbow stars (points that can be collected on the site) donated by fans. The more stars there are, the more congratulatory advertisements are posted in various places.

When 20,000 stars gather, a congratulatory video will be screened on the CM board (square pillar) at Hapjeong Station in Seoul Subway. When the number of stars reaches 55,000, a congratulatory video will also release on the Shinokubo electronic display in Shinjuku, Tokyo, Japan. In addition, abundant gifts such as Jamsil's large digital electronic display, Hongdae's M-screen, and Seoul bus advertisements are waiting for fans.