December 18 Morning Analysis: Bitcoin is currently oscillating around 86,000. After the 4-hour cycle price surged and touched the upper band, a long upper shadow was formed, indicating that the bullish momentum is rapidly weakening. Although the 4-hour candlestick shows a technical rebound in the lower band area, the bearish trend has not been fundamentally reversed. The middle band and MA30 above form a core resistance zone.

In terms of technical indicators, the MACD red histogram is expanding, and the DIF and DEA are converging with a death cross; the three lines of KDJ have already moved down to the oversold area, and the RSI value is approaching 25 with a lack of upward momentum after turning, indicating that short-term bearish downward momentum still exists. Long positions currently do not meet entry conditions.

From the daily cycle perspective, the MACD red histogram is beginning to expand, RSI three lines are turning downward, and KDJ maintains a bearish divergence trend. The candlestick has effectively broken below the lower band support. In the short term, the price will primarily test the previous low support at 83,900. If this level is broken, combined with the negative catalyst of CPI data, the price will further decline to the lower band at 81,150 on the 2-day chart.

Operationally, it is recommended to focus on rebound-based high short positions as the core trading strategy.
Trading suggestion: Short Bitcoin at 86,800-87,300, targeting 85,000-85,500; Ethereum to be operated in sync.