The more rainbow stars, the more congratulatory advertisements are posted in various places.

Source: Fan N Star

[The Fact | Reporter Choi Joo-bin] “Happy Sandeul Day!”

Idol weekly ranking site 'Fan N Star' is holding a surprise support event starting on the 23rd to celebrate B1A4 member Sandeul's birthday. It is a global fandom project where advertisements celebrating his birthday are posted in various places.

The success of Sandeul's birthday celebration project is determined by the number of rainbow stars (points that can be collected on the site) donated by fans. If more than 20,000 stars are collected, a congratulatory advertisement will be held.

When the number of stars reaches 50,000, a congratulatory video will be shown on the CM board at Hapjeong Station of the Seoul Subway. When 35,000 stars are collected, a congratulatory video will be displayed on the Shinjuku Shin-Okubo electronic display board in Tokyo, Japan. In addition, special gifts such as Hongdae M Screen, Jamsil large digital display board, and Seoul bus advertisement are prepared.

The event will continue until March 10th, and you can participate in the 'ADs.' of the 'Fan N Star' website.