Utilize the input text as a context reference, choose the right relationship between Xiaohongshu and social media from the options. Options: 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.

In addition, the major social media platforms for us to provide advertising service have extended even further beyond just Weibo and Bilibili, with Xiaohongshu and the Douyin now being added to the roster.

Answer: industry