Recently, Microsoft was accused by several renowned authors, who claim that the company used a large number of pirated books without permission to train its artificial intelligence model Megatron. The suing authors include Kai Bird, Jia Tolentino, and Daniel Okrent, who filed a lawsuit in the U.S. District Court for the Southern District of New York, arguing that Microsoft used pirated electronic versions of their works for AI training, allowing the AI to generate responses based on users' text instructions. The core issue of this lawsuit is whether the use of copyrighted materials during AI training constitutes copyright infringement.