I always feel like a black swan is on the way. This kind of decline is really rare—no news at all, just keeps falling. The best approach at times like this is to place limit orders for catching rebounds, like setting orders at 30,000 or 40,000. If a black swan happens to pick it up, that's a profit. If not, just cancel the orders later and go for a right-side strategy. Rebounds at this level are too hard to trade, and if the market fully turns bearish, there's no need to chase rebounds. If a rebound does occur, it's better to take small short positions. Going with the trend is more important than anything else.