Announcement from Ouyi on Sei Network Upgrade We will support Sei network upgrade. To ensure the smooth progress of the upgrade, please note the following arrangements: Suspension time: Starting from 23:00 (UTC+8) on February 3, 2026, all coin deposit and withdrawal services on the Sei network will be suspended. Service Recovery: After the network upgrade is completed, we will resume coin deposit and withdrawal services while the network is running stably, without further announcement. No action required: If your account holds Sei Network and other related tokens within the network, no action is required during the network upgrade period. Official information link for network upgrade: Official announcement: https://www. (mintscan. io)/proposals/108 Please note that trading is not affected: trading of related tokens will proceed normally. But please pay attention to the potential risks of spot, leveraged, and derivative trading of related tokens, and increase margin in advance to reduce risks. Financial security: Please do not perform any token deposit or withdrawal operations during the network upgrade period to avoid financial losses. Ouyi Team January 30, 2026