《落满天空的阳》是作曲家秦文琛于2016年为一架多声弦制筝而作的作品。打破古筝传统的音响定式，建立具有个人独特审美和文化内涵的多元音响空间，是本曲最鲜明的创作特征。论文依次从核心音响素材的设计、音响主题的呈示发展及其结构意义、音响时空的构建与文化语意三个方面，对作品的创作技术进行分析，并结合音响创作的表现意义，剖析作曲家将个人、自然和中国传统艺术精神相结合的创作观念和文化语意。

The piece tittled The Falling Sunlight Enveloping the Sky is composed by QIN Wenchen in 2016 for a multi-string conjoined Guzheng.By breaking away from traditional 13-to 21-string tuning and pentatonic sounding Guzheng,the composer establishes his unique acoustic domain in this piece with personal aesthetics and cultural semantics though a reformed 25 plus 18-string conjoined Guzheng.This paper analyses the techniques of this piece from three perspectives:the design of core sonic materials,the development and structural significance of acoustic thematic elements,and the construction of aural space-time with its cultural connotations.Moreover, it delves into the composer's concept on sonic innovation,which seamlessly blends individuality,nature,and the essence of traditional Chinese artistry.