On the 4-hour chart, after the price sharply fell to 85563 points, there was a slight rebound, but the rebound strength was weak, showing a typical weak repair situation. From the BOLL perspective, the price has significantly fallen below the middle band and pierced the lower band, while the subsequent rebound failed to return above the lower band. The opening of the BOLL further confirms the medium-term short positions trend. In addition, the rebound process lacks support from higher trade volumes bullish line, and the slight warming of the price is merely a corrective action during the downward process.