‘Fan N Star’, a website that delivers idol ranking information, will be holding a special event for B1A4’s Gongchan on July 21st. It is a grand advertising project to celebrate his birthday on the 14th of next month.

The ‘Gongchan birthday project’ can be successful through the number of rainbow stars (points collected on the site) donated by fans. The more stars collected, the more celebratory advertisements display in different places.

If 20,000 stars are collected, a congratulatory video will be screened on the CM board (square pillar) at Hapjeong Station in the Seoul Subway. And if the accumulated stars reach 55,000, a congratulatory video will also be screened on the Shin-Okubo electronic board in Shinjuku, Tokyo, Japan. Apart from those, abundant gifts such as Seoul roadside bus shelters, huge digital displays in Jamsil, and Seoul bus advertisements will be waiting for the fans.