On Thursday, the National People's Congress convened in Beijing in what has become a familiar annual ritual. Some 3,000 “elected” delegates from all over the country—ranging from colorfully clad ethnic minorities to urbane billionaires—will meet for a week to discuss the state of the nation and to engage in the pretense of political participation.

Some see this impressive gathering as a sign of the strength of the Chinese political system—but it masks serious weaknesses. Chinese politics has always had a theatrical veneer, with staged events like the congress intended to project the power and stability of the Chinese Communist Party, or CCP. Officials and citizens alike know that they are supposed to conform to these rituals, participating cheerfully and parroting back official slogans. This behavior is known in Chinese as biaotai, “declaring where one stands,” but it is little more than an act of symbolic compliance.

Despite appearances, China's political system is badly broken, and nobody knows it better than the Communist Party itself. China's strongman leader, Xi Jinping, is hoping that a crackdown on dissent and corruption will shore up the party's rule. He is determined to avoid becoming the Mikhail Gorbachev of China, presiding over the party's collapse. But instead of being the antithesis of Mr. Gorbachev, Mr. Xi may well wind up having the same effect. His despotism is severely stressing China's system and society—and bringing it closer to a breaking point.

Predicting the demise of authoritarian regimes is a risky business. Few Western experts forecast the collapse of the Soviet Union before it occurred in 1991; the CIA missed it entirely. The downfall of Eastern Europe's communist states two years earlier was similarly scorned as the wishful thinking of anticommunists—until it happened. The post-Soviet “color revolutions” in Georgia, Ukraine and Kyrgyzstan from 2003 to 2005, as well as the 2011 Arab Spring uprisings, all burst forth unanticipated.