People tend to confuse between personal finances, and monetary/fiscal policy of a nation.
For personal finances, a person can't print their own USD/RMB so stuff like "living within one's means", "saving", "low debt" etc make sense.
But a nation prints its own currency, so these concepts don't apply as long as inflation, exchange rates, and systemic stability are taken care of. The correct analogy would be if in my own family I use my own created fake currency to govern and incentivize my children. It doesn't matter how many of this fake currency I issue, as long as the incentivization or the "economy" is booming, children are working hard and productively etc.
China currently has an excess of savings, negative inflation, very low interest rates, and no external debt, specially no debt denominated in foreign currency. Ideally they should expand both the monetary and fiscal policy substantially.
They should be printing money and giving it to Universities for science, SOEs for tech development and upgrade, Startups/Companies as risk capital, and what not.
However, it almost appears that they are dealing with fiscal/monetary policy as if it is one's own personal finances.