According to @GreeksLive, Smart Trading will undergo an upgrade and data migration on Saturday, Sep 20 at 10:00 Beijing Time, causing a 1–2 minute service interruption during which in-progress orders will pause and new orders cannot be submitted, source: @GreeksLive. The team stated it will work to restore stability quickly, and if significant market volatility occurs during the window, the maintenance may be rescheduled with further notice, source: @GreeksLive. Traders should expect Smart Trading functionality to be temporarily unavailable during the maintenance window, including execution and order entry, based on the announced pause of ongoing orders and disabled new submissions, source: @GreeksLive.