Know or not ( Know or not should be green, fat, red and thin TV drama theme song) - Hu Xia/Yu Kewei: Li Qingzhao/Zhang Jingyi: Liu XuandouArrangement: Liu XuandouAudio/Mix: Liu Wenyang/Tong XinyuStudio: Youth Flower StudioXiao Performance: Chen YurongString Performance: International chief Philharmonic OrchestraChorus...