Abroad: Su Zeng made great efforts to burn the bottom with a smoked axe. Democritus, Plato, Aristotle, Cicero, quintilian, Victor Reno, Thomas Moore, Comenius, John Locke, Rousseau, Diderot, helvetius, Pestalozzi, Fichte, robert owen, Herbart, Laufer, Stilwell, Crusca, Paul Monroe, Sandek, Mikhail Ivanovich Kalinin, Anton Semyonovich Makarenko, Ivan Andrei, etc.