Announcement from Ouyi on Adjustment of Some Index Components

Dear Ouyi user: To further enhance the stability of the index and prevent market risks, Ouyi plans to adjust some index components and weights from 12:00 to 18:00 (UTC+8) on June 5, 2025. The adjusted index will be calculated by weighting the prices of the new components with their corresponding new weights. The specific adjustment plan is as follows: Index price calculation logic The index price is calculated by weighting the prices of each effective component of the index according to their corresponding weights. Please refer to the index calculation rules for detailed rules. Ouyi will continue to provide you with better products and higher quality services. Ouyi team June 4th, 2025