Is China’s High-Quality Investment Output Economically Viable? | Carnegie Endowment for International Peace
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Source: Getty<br>Commentary<br>China Financial Markets
Is China’s High-Quality Investment Output Economically Viable?<br>China’s rapid technological progress and its first-rate infrastructure are often cited as refuting the claim that China has been systematically overinvesting in non-productive projects for many years. In fact, as the logic of overinvestment and the many historical precedents show, the former is all-too-often consistent with the latter.
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By Michael Pettis<br>Published on Apr 29, 2026
Blog<br>China Financial Markets<br>China Financial Markets provides in-depth analysis of one of the world’s largest and most vital economies. Edited by Carnegie Senior Fellow Michael Pettis based in Beijing, China Financial Markets offers monthly insights into income inequality, market structures, and other issues affecting China and other global economies. A noted expert on China’s economy, Pettis is a professor of finance at Peking University’s Guanghua School of Management, where he specializes in Chinese financial markets.
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Many analysts see a contradiction at the heart of debates over the Chinese economy. On the one hand, some argue that China has been overinvesting at a growing scale. This overinvestment, they claim, is responsible for China’s soaring trade surpluses and rapidly rising debt burden, which together increase the likelihood of the economy facing a Japan-style rebalancing period of much slower growth.<br>Others point out that China’s exports are booming, it has built some of the most impressive infrastructure in the world, and has made remarkable technological advances—in some areas catching up to, and even surpassing, the United States. In the words of the Global Times, it is a country of “high-speed trains racing across the land, power grids reaching millions of households, factories accelerating smart and digital transformation, and platforms reshaping production and distribution methods.” These successes, they argue, contradict the view that China’s economy is on an unsustainable path, because an economy cannot be both in trouble for overinvesting and also achieving such extraordinary real-world results.<br>But in fact, there is no contradiction. Both stories are true: They are not competing narratives but different ways of seeing the same Chinese economy. China’s surging trade surplus, its high-quality infrastructure, and its technological advances do not refute the claim of overinvestment. On the contrary, they may actually support it. The irony is that while China is providing the world with the “gifts” of improved technology and advanced infrastructure, it may be doing so at a significant cost that may eventually bankrupt the economy.<br>The confusion arises from a misunderstanding of what “overinvestment” means. It does not imply that investment fails to produce physical assets or technological progress. On the contrary, overinvestment often results in real improvements in infrastructure and technology. High-speed rail networks, modern airports, advanced manufacturing capacity, and cutting-edge research capabilities are exactly what one would expect from an economy that channels an excessively large share of its resources into investment.<br>It is nonetheless “overinvestment” if it generates less real value than it costs in resources—including subsidies and transfers. If investing $100 of real resources produces more than $100 in value, the investment is sustainable and leaves the economy better off. If it produces less, no matter how technologically advanced, it is ultimately unsustainable and leaves the economy worse off. In that case, the gap between cost and value must be absorbed somewhere—typically through rising debt and capitalized losses.What GDP Means in a Soft Budget Economy Like China,” China Financial Markets (Carnegie Endowment for International Peace), April 2, 2026." id="footnote-ref-1">1<br>Eventually, once debt is no longer able to rise quickly enough to fund old and new investment losses, the process will stop. When that happens, the losses will finally be amortized in the form of direct or hidden transfers and a reversal of the GDP growth artificially created by capitalizing the original losses.What GDP Means in a Soft Budget Economy Like China,” China Financial Markets (Carnegie Endowment for International Peace), April 2, 2026." id="footnote-ref-2">2<br>What Drives Chinese Investment?<br>This isn’t a recent problem. There have been growing concerns during the past ten to fifteen years...