There is no time limit. pb refers to photobook, which can be simply understood as a photo book of stars. Times Youth League pb is not limited in time, but it is limited. Times Youth League is a mainland Chinese male singing group launched by Times Fengjun. It consists of Ma Jiaqi, Ding Chengxin, Song Yaxuan, and Liu Yaowen. , Zhang Zhenyuan, Yan Haoxiang, and He Junlin are a group composed of seven people.