On Friday morning, the Bitcoin market experienced a slight rebound and correction, with the price rising from a low of 89095 in the early hours to a high of 90050 at noon before facing downward pressure, dipping to a low of 89358; Ethereum also mirrored the morning rebound trend, reaching a high of 2983 before encountering downward resistance, falling to a low near 2933 in the afternoon.

From the chart perspective, the four-hour level tested the middle band of the Bollinger Bands and faced downward pressure again, with the three bands of the Bollinger Bands contracting downwards simultaneously, and the KDJ indicator forming a death cross with its three lines; after a slight rebound correction in the market, the bearish volume continues to be released slowly. On the one-hour level, after a brief rebound, the price broke below the middle band of the Bollinger Bands, with the middle band gradually moving downwards, and the short-term MACD double lines converging before forming a death cross and extending downwards. The afternoon's trading strategy continues to maintain a bearish outlook on highs.

Bitcoin can be shorted in the range of 89500-90000, targeting around 87000; Ethereum can be shorted in the range of 2950-2970, targeting around 2800.