HashKey Exchange will support the Optimism (OP) network upgrade, with the following specific arrangements: The project will undergo a network upgrade at block height 1,710,374,401 (expected to be on March 14, 2024 at 08:00 Hong Kong time); HashKey Exchange will suspend token deposit and withdrawal services for the Optimism (OP) network at 21:25 on March 13, 2024 Hong Kong time. Note: The trading of Optimism (OP) tokens will not be affected; HashKey Exchange will reopen the relevant token deposit and withdrawal services after the network upgrade is completed and the network is stable, without further notice.