What was China like when Qian Xuesen did not return to China?

Imperialism of the great powers surged like a flood, plundered by force and oppressed by economy, which made China lose its independence and fall into a semi-colonial situation. Since the Revolution of 1911, the situation in China has deteriorated rather than improved. The imperiousness of warlords and the erosion of foreign forces have become more and more serious, which has plunged China into the semi-colonial mire and plowed into hell. Domestic warlords are violent and willful, taking the people as fish, and all political and democratic construction is beyond words. The so-called government of the Republic of China has been controlled by warlords, who use it to make friends with foreign powers to consolidate themselves. The powers also used it to borrow money to pay their own military expenses, causing civil strife and disputes in China, seizing political power and occupying their respective spheres of influence. China people are deprived of their political life, that is, their economic life, and the middle class changes frequently, which is particularly difficult; Small entrepreneurs gradually go bankrupt, small industrialists gradually lose their jobs, become refugees, become soldiers and bandits; Farmers can't run their own businesses, sell their land cheaply to people, live an increasingly affluent life and pay more and more taxes. If it is a terrible situation, we can see it everywhere, which is not enough to say that we are on the verge of despair. With a history of 5,000 years of civilization,12.8 million square kilometers (540,000 in the northwest+65,438 in the outer Mongolia+0 100000+056.4+* * 9.6 million in China) is always in a red wind. Industry, agriculture, weapons and aerospace are backward.