The second card of Idol Dream Festival has a level upgrade: you can use the experience voucher to upgrade the card level. After the level upgrade, you can increase the value of the card and unlock some squares of Idol Road.

idol road: use the corresponding props or diamonds to unlock the grid, and improve the card's value, skills, clothing, ability to bloom, etc.

tip: when the materials are sufficient, you can click on the lower grid to unlock it quickly.