Ph. D. Education is a video education portal built, operated and managed by beijing inter-china technology ltd. The company's headquarters are located at beijing's technological industry base, and the leading companies in the technology industry base (the union's headquarters, the 100th headquarters, the oracle headquarters, han's technology) have a doctorate whose aim is to “share to change the world, educate to change life” and “green, simple, happy, speed” to serve the global chinese. As of december 2011, the total number of registered ph. D. Education members had exceeded 100,000 and the number of users was over one million. Ph. D. Education uses state-of-the-art international cdn video loads and gslb static page acceleration technologies, and web servers operate a five-star double-line room across the country, effectively safeguarding the flow and stability of users in video learning. The aim of doctoral education is to spread more and better educational resources further and more widely, based on the internet, and to address educational disparities, achieve equity in education and build a harmonious society。