Universities without walls have no academic barriers, and troops without military uniforms are a marketing model. In the United States, it is called geometric multiplication, in Japan it is called store-free operation, in Europe it is called modern network marketing, in Taiwan Province Province it is called reverse marketing, and in our mainland it is called multi-level network marketing, which is direct selling.

This kind of quotation mostly appears in the propaganda text of direct sales or chain sales in different places. The original text is as follows:

June 7, 2007 (Phoenix Satellite TV): There is a war without smoke on the mainland of the motherland. A team without military uniforms, a university without walls, and a cradle of millions or even billionaires are attracting thousands of people with lofty ideals in Qian Qian. Under the cover of the media, they endured humiliation and worked actively to successfully build the Great Wall of the motherland.