AI video generation tools have a wide range of applications, and Chinese AI companies have taken the lead over their US competitors in this field. Companies like ByteDance and Kuaishou have leveraged their vast libraries of short videos to train their systems, giving them a competitive edge. US tools, hindered by content censorship restrictions, often produce subpar results and frequently encounter errors. Chinese tools such as Kling and Seedance 2.0 have scored highly on the Arena platform, offering smooth usage, the ability to handle complex shots, and unleashing creative freedom. Additionally, Chinese platforms offer high cost-effectiveness, providing flexible payment models for individual creators. Although some users face usage restrictions, this has also opened up business opportunities for enterprises, reshaping the advertising industry. However, ByteDance has previously faced legal threats over copyright issues and has now committed to strengthening copyright protection.