At "Fan & Star," the group is working on a project to advertise Jeongyeon's birthday.

Idol fandom's playground, "Fan & Star," held a surprise event for Jeongyeon on Oct. 7. It is a large advertising project celebrating the anniversary of her birthday on Nov. 1.

The event will be held in cooperation with ONCE (the name of the TWICE fan club) and "Fan & Star" who support Jeongyeon. Success will be confirmed with the number of stars (points that fans can collect on the project). The more stars gather the more celebratory advertisements appear in various places.

Participation in the project is possible from the "ADs" menu on the "Fan & Star" website. This is a way to donate the stars that fans have gathered so hard to advertising products that they want.

Currently, 1,269 stars are gathered in Jeongyeon's birthday project. With the event running through Oct. 20, attention is being paid to whether it will be successful for the rest of the year.

Meanwhile, "Fan & Star" is a playground for idol fandom that provides information on various idol rankings, fan communities and events. It is currently holding its third week of voting in October. The vote runs through Oct. 21.