\\\"Under the conditions of class existence, there are as many isms as there are classes, and even each group of a class has its own isms. \\\"The reform movement carried out by Shang Yang was a profound social change in the transition from slavery to feudalism.
Purpose: Revolution is to use violence to break the old political superstructure. The first and basic symbol of revolution is the transfer of state power from one class to another. On the basis of Qin Xiangong's armed seizure of power, Shang Yang's reform adapted to the needs of the emerging landlord class to seize power and consolidate power. It broke the Qin State's old political superstructure and transformed the Qin State from a slave country to a feudal country. This is an indelible historical achievement of Shang Yang.