? Collection period: 1977 till now. The collection period of Superstar Digital Library varies with different resources. Generally speaking, resources with a long collection period can reach decades, while newer resources may only be in recent years. The specific collection cycle needs to be queried according to specific resources.

Founded in 1993, Superstar Digital Library is a professional digital library solution provider and digital book resource provider in China. Superstar Digital Library is a demonstration project of China Digital Library under the national "863" plan, which was officially opened on the Internet in June 2000. Invested and built by Beijing Century Superstar Information Technology Development Co., Ltd., it currently has more than 800,000 kinds of digital books.

Coverage: covering philosophy, religion, social science, classical theory, ethnology, economics, natural science, computer and other disciplines.

Advantages of Superstar Library: Superstar e-book database contains 6,543.8+0.4 million kinds of high-definition picture format e-books (original Superstar e-book bag library) and 6,543.8+0.5 million kinds of ultra-clear EPUB e-books (original Superstar Book World). At present, it has a total collection of 6.5438+0.5 million volumes, which is the largest online Chinese library in the world, covering 22 categories and various disciplines of China Library Classification.