I don't think there's any contradiction between the two statements. Y Combinator stops their involvement in YC China, turning it into a separate entity. YC China gets renamed MiraclePlus.
The announcement by YC emphasizes the separation from YC China, the announcement by MiraclePlus emphasizes the continuity with YC China.
The announcement by YC emphasizes the separation from YC China, the announcement by MiraclePlus emphasizes the continuity with YC China.