Zhongli main reason why he is willing to give up his geo Gnosis to tsaritsa

Zhongli Three Last sentence of (' The Fond Farewell ') on the sixth part in the Teyvat storyline Archon Quests, Chapter I, Act III: A New Star Approaches.

► Zhongli: My agreement with the Cryo Archon will be the last of my contracts as the Geo Archon — my "contract to end all contracts."

► Zhongli: As for the bargaining chip that the Tsaritsa used to balance the scales...

► Zhongli: Uncover that answer for yourself in your future journeys.

I believe that Guizhong is still alive but inflicted by karma and sealed by the cryo archon Tsaritsa.