China exports like a trillion dollars of value more than it imports, and it seems to actively maintain this stance - Does it? And if so, why? My reductive ape-brain says if more goods are leaving your country than coming in, then other countries are accumulating actual goods, and your country is accumulating pieces of paper (or digital bits). Seems like a losing strategy.
Why not just make all the goods that your country wants (especially if you're an enormous country that can scale economies and has access to strategic materials like China) and then you'd have more stuff?
And how do currency exchange markets fit in? I thought exporting and importing and fluctuating value of currencies meant that it should all sort of 'balance out' in the end. Because prices of currencies change the value of export/import and consequently you'd eventually have a country that exports and imports the same value of goods.
Maybe I fundamentally misunderstand the purpose of trade. Or maybe I've been playing too much Victoria 3.
Just on the first point, it depends on what you mean by capital. It looks like two senses are being confounded in your comment.
If you mean it in the sense of Neoclassical/mainstream economics, i.e. artificial goods used to create further goods (i.e. machinery and equipment), i.e. as a means of production, which seems to be what you mean, then China did have this before Deng. Every society does. China had greatly economically developed its means of production during the Maoist period, and industrialization had already progressed to a significant degree. See what Amartya Sen, of all people, said about the Maoist period:
Because of its radical commitment to the elimination of poverty and to improving living conditions - a commitment in which Maoist as well as Marxist ideas and ideals played an important part - China did achieve many things… [including] The elimination of widespread hunger, illiteracy, and ill health… [a] remarkable reduction in chronic undernourishment… a dramatic reduction of infant and child mortality and a remarkable expansion of longevity.
The accomplishments relating to education, health care, land reforms, and social change in the pre-reform [i.e. Maoist] period made significantly positive contributions to the achievements of the post-reform period. This is so in terms of their role not only in sustained high life expectancy and related achievements, but also in providing firm support for economic expansion based on market reforms.
According to the Journal of Global Health
According to Population Studies
Sen also emphasizes gains in education:
Finally, see Maurice Meisner (Mao's China and After) to summarize:
The Maoist economic record... compares favorably with comparable stages in the industrialization of Germany, Japan, and Russia - hitherto the most economically successful cases (among major countries) of late industrialization. In Germany the rate of economic growth for the period 1880-1914 was 33 percent per decade. In Japan from 1874-1929 the rate of increase per decade was 43 percent. The Soviet Union over the period 1928-1958 achieved a decadal increase of 54 percent. In China over the years 1952-1972 the decadal rate was 64 percent. This was hardly economic development at "a snail's pace," as foreign journalists persist in misinforming their readers.
If you mean capital in the Marxist sense as a social relation of self-producing value underwritten by a class relationship, then it can be argued that this was largely eliminated from China between 1956-1978, before being reintroduced under Deng.