不塞下流，不止不行

Explanation: Refers to Buddhism, Taoism, if not blocked, Confucianism can not be implemented. Now do not get rid of the old metaphor, bad things, new, good things to be established. 　　Source: Han Yu Tang "Tao" What, then Ruzhi He and can be also? Said, do not plug does not flow, more than not. " 　　Examples: Do not put this kind of thing down, what culture is built is not up. Locked in, ~. (Mao Zedong's "New Democracy")