This is a problem inherent in all totalitarian or near-totalitarian countries. The fact is that in such countries information is used mostly for manipulation and propaganda. Take North Korea for example - there they flew on the sun and won all Olympics and world championships in all disciplines. Well, how else to keep the starving population in inhuman conditions in their hands - they must be restrained by such positive lies. And of course - their economic indicators are also "the highest in the world", and the whole world "lives much worse than North Korea"
Of course, China has not sunk to such a level, but it uses some of the "techniques" of information manipulation. For example, gold and currency reserves - were and remain completely closed information.... Once in the 20s they published it more or less openly, and that's it, the information is no longer available. But there is a lot of "beautiful data" about the economy and "the strong hand of Deng Xiaoning, leading China to world domination". By the way - the next term of Deng Xiaoping became possibly fatal for China. Now the government has begun to restrict private business, total control is being introduced, freedoms that have not had time to fully develop are being curtailed, and all this is unlikely to benefit China, given its current critical problems in the economy.