Does spectral harmony in Beijing have anything to do with optical media?

No, Beijing Spectrum and Source is a company engaged in film and television investment, production and distribution, and Light Media is a film and television production company in Chinese mainland, so Beijing Spectrum and Source have nothing to do with Light Media. They are two independent companies. Relationship refers to the relationship between people, people and things, things and things. The relationship in marketing refers to the long-term mutual benefit and trust relationship established by savvy marketers with their customers, distributors, distributors and suppliers in order to promote the success of enterprise transactions.