The xbt is a bitcoin futures contract launched by the bitmex, and I chose him as the analysis target because his data was adopted by the cme. In this market with hundreds of exchanges, the price of the bitcoin is defined differently, and we have to find a relatively stable reference, so I chose the xbt as the analysis target. xbt biggest problem is his short timethere is limited history we can refer to. But in the past four years, lithium, bitcoin trend, can still find some valuable reference. Compared to the current position, we see that this is a big level decline, and in history, there are three same trends, from June-December 2018, June-December 2019, April-July 2021, and now, from November 2021 to now. Among the four trends, the first three times are six months, six months and three months respectively, which is very conspicuous. If the first two times are defined as a major level adjustment, then April last year is the secondary level adjustment.And now is it three months old, or six months old? In theory, after falling below ma144, the market should rebound and confirm, then decide direction.Now look, the first two have appeared a significant rebound, however, once again down the trend.But the third time did not appear, and this time, there was a rebound in ma144 in December. If we believe in the rules, then the situation looks more like the one of the previous two than the one of April last April. The first two final adjustments were 12 months and 9 months respectively, meaning that they took the abc triple-wave structure respectively, and the final adjustment goal was to step back to confirm the ma144-week line support.So now it may be at the end of the first wave of decline, but even into the bottom stage, it doesn't mean that buy now can profit, maybe there will be a bigger drop here, may shock for a period of time.So the best strategy to avoid risk is to wait for the right signal to buy, rather than predict price lows, and wait for a rise after buying. Tip, the above analysis, only with the chart as a reference, does not involve the fundamentals.