[MsMowz]

The centralized, unitary structure of the Chinese government and the CPC make it unlikely that there will be a power struggle — there aren't many levers that would-be power players have to pull to achieve their goals (unlike after the Death of Mao, by contrast). Xi holds three positions of authority in China, and it's unlikely that anyone would immediately replace him in all three, as it's only happened in his case because of the confidence that the membership of the CPC has in his faction.

The next General Secretary of the party and Chairman of the CMC would both be elected by the party's Central Committee. Whoever is selected as General Secretary will most likely also be chosen as President, since this is mostly a ceremonial role. The majority of the Central Committee are in the same faction as Xi is currently, so it seems more likely than not that they'll find people from within their ranks to fill these positions and attempt to strengthen the collective leadership.