‎时间的答案 (《披荆斩棘第四季》主题曲) - Song by Hacken Lee, Allen Lin, 梁龙, Reno Wang, 严屹宽, EXILEAKIRA, MIYAVI, 袁成杰, 徐海乔, Sammy Sum, 李泽锋, 李佳琦, Jeff Qin, Evan Yo, WeiBird, 杜海涛, Rhydian Vaughan, 黄潇, Fox Hu, Dylan, Good morning, Ning Huan Yu, Fu Xin Bo, J.zen, Du Hai Tao, Azora Chin, Maiqi Jiao, Long Jing, Kornchid Boonsathitpakdee, 石凯 & Caelan