The 8th Central Committee of the Communist Party of Cuba (CPC) was elected at the 8th CPC Congress on 19 April 2021.
[1][2] The Central Committee is not a permanent institution.
It convenes plenary sessions between party congresses, and in this case between the 8th Congress and the 9th Congress.
When the CC is not in session, decision-making power was vested in the internal bodies of the CC itself; that is, the Politburo and the Secretariat.
None of these bodies are permanent either; typically they convened several times a month.