Ukraine war has shown how wars with high tech adversaries could become a war of attrition with high requirement for men from reserves.
Taiwan and South Korea both maintains huge reserves. If China has to fight against these armies it will have disadvantage when it comes to mobilizing already trained men from the reserves. Why does China only have a reserve of 500k?
With China's threat environment. Shouldn't it have a military reserve of atleast 3-4 million?