"Lee Chang-Sub, thank you for being born."

The place where fans and stars are together, "Fan N Star," launched the birthday ad project for the group BTOB Lee Chang-Sub on Jan. 31. As of Feb. 12, the advertisement for SM board (wall) at Gangnam Station in Seoul has been confirmed.

Lee Chang-Sub's birthday project will be successful in the number of stars donated by fans (points that can be collected on the site). The more stars gather, the more celebratory ads appear in various places.

The way to participate in the project is simple. This is how fans donate their hard-earned stars to advertising products that they want. The number of donations is unlimited and anyone who is a fan can participate.

Currently, Lee Chang-Sub's birthday events include a wide range of products, including SM board (walls), an electronic display board of 43 stations on subway line No. 2, a multi-vision of Hongdae Station, CGV moving wide on Daehangno, Myeong-dong media facade, and a travel bus commercial.

With the project continuing through Feb. 16, attention is being paid to whether more advertising products can be achieved for the rest of the year.

Meanwhile, Lee Chang-Sub joined the military on Jan. 14 last year.