Group 1 - The Hang Seng Index Company announced the quarterly index review results for the Hang Seng ESG Enhanced Index, Hang Seng ESG Enhanced Select Index, and Hang Seng National Index ESG Enhanced Index, effective from December 8, 2025 [1] - The number of constituents in the Hang Seng ESG Enhanced Index will increase from 76 to 77, with the inclusion of Innovent Biologics (01801) and Zijin Mining (02899), while Cheung Kong (00001) will be removed [1][3] - The Hang Seng ESG Enhanced Select Index will also see the addition of Innovent Biologics (01801) and Zijin Mining (02899), increasing its constituents from 74 to 75, with Cheung Kong (00001) being excluded [3][4] Group 2 - The Hang Seng National Index ESG Enhanced Index will include China National Offshore Oil Corporation (00883), Innovent Biologics (01801), and Yum China (09987), maintaining a total of 45 constituents [5] - The inclusion of these companies reflects a focus on ESG criteria within the indices [1][5]