At the moment when the “appointment of spring city” at the 15th meeting of the conference of the parties to the Convention on biological diversity (COP15) is about to arrive, the COP15 theme song composed by Tan Dun, Li Qian and Zhou Shen and the MV “spring with light” will be launched at 17:00 p.m. on September 28, 2021. “Spring with light” was composed, arranged and supervised by Tan Dun, UNESCO global goodwill ambassador. It is another peak work of Tan Dun paying tribute to nature and life...