Astro-century Education&Technology Co.,Ltd, together with its subsidiaries, plans, designs, produces, and distributes educational supplementary books for the K-12 basic education stage in China. Its publications include synchronous and review series for primary, junior high, and senior high schools, lesson plan series, special projects, Chinese language and literature series, textbooks, and children's picture books. The company also provides supplementary teaching material services, technical and consultation services, and sells products under the Zhihong Optimization and Hong Chinese brands via online subscriptions, direct sales, and e-commerce platforms. It additionally operates in educational information services, investment platforms, live streaming and e-commerce, educational services, property management, IT consulting, software services, and education industry research and exchange activities. Formerly known as Shandong Astro-Century Education & Technology Co., Ltd., it changed its name to Astro-century Education&Technology Co.,Ltd in August 2018, was founded in 1994, and is based in Zibo, China.