system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How is Xi Jinping becoming the leader of China's armed forces so different from the US President being the Commander in Chief of the American Armed Forces?

Is it just because he isn't elected democratically, or is there something more than that?
gpt
There are two kinds of organization that control PLA: State government and Communist Party (the only political party in China). Nominally, Xi Jinping is the leader of state government, which in returns also act as Commander-in-Chief. In practice, PLA is controlled by special military commission which is a part of Communist Party. Xi Jinping is also a head of this military commission, to ensure that members of the military commitee (which is composed of military generals stays loyal.

But... The ones that CAN declare war is Politburo, which is ALSO led by Xi Jinping. Confused much? So do I.