History: Zhang Jian and the Rong brothers are both famous industrialists in modern China. Through study, please tell us the common reasons for the rise and decline of the companies founded by them.

The same reasons for the rise:

1. After the success of the Revolution of 1911, the overthrow of the feudal autocratic monarchy and the establishment of the bourgeois Communist Party greatly stimulated the capital Enthusiasm for socialist investment, construction of factories and revitalization of industry.

2. During the First World War, China's boycott of foreign goods continued. Foreign goods suffered a heavy blow, but domestic products continued to sell well. 3. During World War I, the European powers were busy with the war and temporarily relaxed their economic aggression against China.

The same reason for the decline: the return of imperialist economic power after World War I, and China's national industry was curbed.

Conclusion: Imperialist aggression is the fundamental reason for the decline and bankruptcy of national industry. Only by striving for national independence, democracy and unity can we develop the national economy.