"On February 3, it was announced that SM The Ballad would make their comeback in the month after more than 3 years of hiatus, and Zhang would join Shinee's Jonghyun, Super Junior's Yesung, Super Junior-M's Zhou Mi, TVXQ's Changmin, Girls' Generation's Taeyeon, Exo's Chen, and Krystal from f(x) in promoting a new EP called "Breath".The eight members released their second EP on February 13, with Zhang performing the Chinese version of "Breath" with Chen.