BTC: Bitcoin has been fluctuating between 90,000 and 91,000 since yesterday. The current downward movement is a second retest confirmation. The early trading signs indicate that although the market is moving slowly, the bullish support below is still effective. The current trading range is 90,400-92,100. For intraday trading, we focus on the support retest below; as long as it does not break, long positions can be entered. If the upward resistance is not broken with volume and price increase, it is prudent to take profits promptly.