According to @EmberCN, Maker's oracle updated its price to $1784.6 at 7:00, which is below the liquidation price of $1787.8 for a position holding 64,800 ETH. Without additional collateral or repayment before the update, partial liquidation will occur. The account holder has 50 minutes left to act.

According to @EmberCN, despite ETH's price falling below $1787.7, the liquidation threshold for a large position on Maker, liquidation was not triggered. This is because Maker's oracle updates prices hourly and only initiates liquidation when the oracle's current price drops below the liquidation price.