'Congratulations on the 4th anniversary of your debut,' Bolbbalgan4, cheering from fans.

"Congratulations on the 4th anniversary of Bolbbalgan4." Celebrating the 4th anniversary of singer Bolbbalgan4's debut on April 22, a congratulatory video is being screened on the CM board at Hapjeong Station in Mapo-gu, Seoul.

Idol weekly ranking site Fan & Star has released a video cheering for singer Bolbbalgan4.

Fan & Star released a video of Bolbbalgan4 on Tuesday, which is being screened at the CM board at Hapjeong Station in Mapo-gu, Seoul. Earlier on March 27, "Fan & Star" opened a Bolbbalgan4 event and achieved an electronic billboard advertisement. As a result, the CM Board at Hapjeong Station in Mapo-gu, Seoul, will be released from the 20th to the 26th.

Bolbbalgan4's support was successful, and "Fan & Star" was bombarded with messages of support from fans. Fans commented, "Congratulations on your 4th anniversary! Let's go until the 40th anniversary," he said. "Congratulations on Bolsa's fourth anniversary."

In "Fan & Star," fans can open their own electronic display support for artists they want. If you can make your own electronic display video, you can apply for "Special ADs" and "Global ADs" if you can't produce the video.