In the eyes of global concern, the “Spring City appointment” of the fifteenth meeting of the conference of the parties to the Convention on biological diversity (COP15) is about to arrive. At this time of the four seas in the same spring, the COP15 series theme song and MV “harmony with light in the same spring” produced by the preparation office of COP15 Yunnan Province, composed by Tan Dun, composed by Li Qian and sung by Zhou Shen were officially released online. “Spring with light” is com...