Analyst Chen Shu: My long positions in Bitcoin and Ethereum were successful yesterday (December 17th). Watch for support at 8.5 during this weak rebound.

Analyst Chen Shu: Bitcoin and Ethereum long positions were successfully profitable yesterday (December 17th). The weak rebound suggests watching the 8.5 support level. Yesterday's midday article recommended a long position in Bitcoin at the current price of 8.58 and in Ethereum at 2920, successfully generating a profit of 2000/60 points. Congratulations to those who followed the trades. Looking at the daily chart for Bitcoin, as analyzed in the article, yesterday's price retraced to the 8.5 support level but failed to break through. The highest rebound reached 8.8 before falling back again. Currently, there is a need to retest the 8.5 support level. Continue to monitor whether 8.5 is broken. If it is breached, it may retest the 8.3/80,000 support level. In the short term, it is recommended to first look for a retracement, with the first support level to watch being 8.5. From the daily chart, Ethereum's trading range is narrowing, currently fluctuating between 2980 and 2900. Pay attention to the direction of the breakout from this range. If it retraces to 2900 without breaking it and then rebounds and breaks above 2980, you can go long and expect a rebound. Conversely, if it falls below 2900 and fails to return to the trading range, you should expect a deeper retracement. Midday trading strategy (written at 13:40):