The underlying logic of technical analysis is like trying to catch a falling knife. Continuing with the conclusion: the 7.5 level is equivalent to 28,000 in 2021. If it breaks below, it will accelerate into a deep bear market, followed by oscillation and bottoming out. I basically open the $BTCUSD Index trading pair on Tradingview every week, where I can see all the trends from 2009 to now, similar to the main contract. I compare and review the candlestick charts against the macro environment and the fundamentals of the crypto market at that time. The facts have proven that this method is very effective; the longer the time cycle, the more effective it is, and it’s always the same every time. The four-year cycle caused by production cuts leading to supply and demand imbalance is now weakening, but the inertia has already taken root in people's minds.