What is the relationship between higher and music streaming in the context of the input sentence. Choose an answer from: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.

This sequential decrease was primarily due to, number one, greater revenue mix of lower-margin digital content services, including the live broadcast of HUYA and music streaming services; two, higher mix of lower-margins platform games versus PC games.

Answer: distribution_format