The image of the cow is free to use. < br > Koniu Software, deeply involved in the office field, has 20 years of research and development experience, and focuses on making office simpler and more efficient. Its software products are free of advertising and binding, covering computer optimization and efficiency, document reading and editing, picture beautification and management. In addition, Kingsoft Internet Security and Keniu merged Kingsoft Internet Security and announced that it would be free forever.