BTC fell more than 5.4% this week, currently reported at 82638.3 US dollars, once dipping to 81000 US dollars, losing the key support at 86000 US dollars. Continuous outflow of ETF funds and rising macro risk aversion sentiment have triggered selling, leading the market sentiment into a state of fear. The daily chart shows a preliminary stop of the decline but the rebound volume is insufficient, with 84000 US dollars becoming a short-term resistance, and the important support level at 80000 US dollars below.