678 Auxiliary Network is a Chinese resource-sharing website focused on games, software, technology, and practical online information. It brings together downloads, guides, news, promotional updates, and user-oriented resources, with categories spanning Android apps, PC utilities, single-player games, and game-related tools. Visitors can browse tutorials on programming, web development, cybersecurity, data analysis, and system maintenance, alongside collections of office software, device utilities, and entertainment apps.

The site also features game listings across genres such as role-playing, strategy, action, simulation, and puzzles, as well as articles about game updates and related tools. Other sections cover discounts and giveaways, software recommendations, computer and phone tips, templates and source code, and general learning or lifestyle content. The website presents itself as a hub for freely shared resources and says its materials are collected from the internet for learning and exchange.

It invites users to contact the site administrator about potentially infringing content and cautions visitors to assess third-party advertisements independently and use care when making online transactions