The rebound resistance first looks at 1860. At this level, if this resistance is broken, then look at 1910. At least a one-hour level solid close is needed to break the 1860 resistance for the market to show signs of stopping the decline. Those holding short positions should consider exiting this resistance. Before a breakthrough and stabilization, the rebound could end at any time. The lower defense is around 1760, and once the bottom support breaks, directly watch for a spike near 1530.