What are the differences in economy, politics, military affairs, diplomacy, culture, social life and social nature of Qin before and after Shang Yang's political reform?

During the Warring States period, the social and economic development of Qin fell behind the six Shandong countries, namely Qi, Chu, Yan, Zhao, Wei and Han. The collapse of agricultural land system, the emergence of private ownership of land and the reform of tax system are much later than those in Shandong. For example, Lu's "first tax mu" was in 594 BC, and Qin's "first rent grain" was in 408 BC, which was completely backward 186 years. However, at this time, Qin had used iron farm tools, and the social economy developed rapidly, which not only accelerated the disintegration of the well field system and the emergence of private ownership of land, but also caused changes in social order. In 384 BC, Qin Xiangong acceded to the throne and ordered the abolition of the bad habit of martyrdom. The following year, he moved to Dongyang.

During the Spring and Autumn Period and the Warring States Period, slavery collapsed and the feudal system was established. During this period, the use of iron farm tools and the gradual popularization of Niu Geng led to the state-owned land ownership of slave owners being gradually replaced by feudal private land ownership. With the growth of the economic strength of the emerging landlord class, it is required to obtain corresponding political rights. Therefore, there is a seal calling for political reform and development.

Build the economy and establish the rule of the landlord class. Countries have set off political reform movements, such as the Li Kui Reform of Wei State and the Wuqi Reform of Chu State. Shang Yang's political reform happened under this background. This social and political reform movement embodies the law that the relations of production must adapt to the development of productive forces and the economic base determines the superstructure.

(1) forms two opposing classes. Since the Spring and Autumn Period, due to the popularization and use of ironware and Niu Geng, a large number of wasteland has been reclaimed, and some slave owners have turned newly reclaimed fields into private property for rent, thus two classes of landlords and peasants have emerged.

② The need of feudal economic development. During the Warring States period, the emerging landlord class set off a political reform movement in various countries in order to abolish the privileges of the old aristocrat Shi Qing and Shi Lu, establish feudal rule and develop feudal economy.

(3) the need for hegemony between countries. At that time, there was fierce competition among the vassal States. In order to be in a favorable position in hegemony and not be annexed by other countries, countries are competing to reform Qiang Bing, a rich country.

(4) In order to strengthen the strength of Qin, Qin Xiaogong introduced talents and made efforts to reform the country. So Shang Yang was reused.