“万能均线”一词源于其被赋予的特殊含义，具体指的是20日均线。之所以称之为“万能”，关键在于其周期适中，既能准确反映出价格最近的趋势演变，为投资者提供了清晰的操作指导。
The term “one-size-fits-all line” derives from its special meaning, specifically the 20-day average. The key to what is called “one-size-fits-all” is that it is in the middle of a cycle that accurately reflects recent trends in prices and provides clear operational guidance to investors.
1. 价格趋势判断：揭示价格近期走向的能力被视为一项重大发现，理解并掌握趋势是盈利的关键所在。对于多数投资者而言，对趋势的把握往往成为盈利与否的分水岭。
1. Price trend judgement: The ability to reveal recent price trends is seen as a major discovery, and understanding and mastering trends is key to profitability. For most investors, grasping trends often serves as a watershed for profitability.
2. 趋势转折点识别：当20日均线下方转头上行，预示着短期趋势开始好转，若价格有效站稳该均线，则表明短中期上涨趋势确立。反之，高位处若20日均线拐头向下，则警示中短期趋势可能转跌，提示投资者应规避下行风险。
2. The trend turning point is recognized: when the 20-day average turns around, the short-term trend starts to improve, and if prices effectively stabilize the average, the short- and medium-term upward trend is established. Conversely, if the 20-day average turns downwards, the short- and medium-term trend is likely to fall and investors should avoid downside risks.
3. 操作指导意义：经由长时间验证，20日均线在价格变动中表现出良好的指示作用，并能给出明确的买卖信号，因此被誉为“万能”的技术指标。
Operational Guidance: After a long period of validation, the 20-day average displays a good indication of price movements and gives a clear sign of trade, and is therefore referred to as a “one-size-fits-all” technical indicator.
结合比特币的历史数据，2018年的日K线图显示，20日均线对其价格走势具有显著指引作用。单纯依据20日均线制定卖出策略，在当年即可取得丰厚回报。
Combined with Bitcoin’s historical data, the 20-day average of the K-line in 2018 shows that the 20-day average is a significant guide to its price trends. A sales strategy based solely on the 20-day average would yield a great deal of returns in that year.
案例分享：2020年期间，我们再次见证了20日均线的有效性。在年初至3月间的比特币行情中，遵循20日均线发出的买入/卖出信号进行操作，如1月初突破均线后持续持有多单直至2月末，按20倍杠杆计算，收益率高达7倍；之后，随着20日均线拐头向下，于3月底比特币重新站上该均线时反手做空，同样收获约7倍的收益。
During 2020, we witnessed once again the validity of the 20-day average. In Bitcoin transactions between the beginning of the year and March, the purchase/sale signals from the 20-day average were followed, as was the case in early January, when they continued to be held until the end of February, at a rate of seven times the rate of return based on 20-fold leverage; then, as the 20-day average turned downwards, at the end of March, Bitcoin re-mounted to approximately seven times the same amount of gain.
由此可见，简单易懂的20日均线策略在高波动性的中短期趋势行情下展现出极强的盈利能力，同时风险相对较低。
As a result, the simple and understandable 20-day mean-line strategy shows a very high profitability in the context of highly volatile short- and medium-term trends, with relatively low risks.
然而，务必注意的是，20日均线在横盘整理行情中的表现并不理想，此时需结合波动率等其他辅助指标进行交易决策，才能进一步提高交易效果。
It is important to note, however, that the 20-day average does not perform optimally in the cross-cutting processing of transactions at a time when trading decisions need to be made in conjunction with other supporting indicators, such as volatility rates, in order to further improve the effectiveness of transactions.
BTC行情分析与操作建议：
BTC
当前BTC呈现明显的下跌趋势，已持有的趋势空单可继续持有。短线方面，昨日晚间BTC出现小幅跳水，表明反弹力度较弱，未能触及9400美元便在日线布林带中轨遇阻回落。
The BTC is now showing a clear downward trend, and the list of trends held can continue to be held. On the short line, the BTC had a small dive last night, indicating a weak rebound, and the failure to reach $9,400 was a setback in the orbit of the Sun-line Boolean belt.
在此提醒一个小技巧：日K线MACD跌破0轴且价格再次反弹至日线布林带中轨附近，是一个较好的逢高做空时机，这也是布林带交易策略中常用的一种开仓方式，胜率较高。
Here is a reminder of a small technique: the fall of the Japan-Kline MACD into the zero axis and the re-ejection of the price to the middle track of the Japanese-column belt is a better opportunity to do things at any time, and it is also a common method of opening up and a higher rate of success in the Bullin-band trading strategy.
正如之前文中提到，8900-9000美元区间是重要的支撑位，每次回调至此位置附近都可考虑大胆做多，除非该区间被有效跌破，否则继续保持下方空间的关注度。务必记住，此类短线操作应设定好小压力位作为止盈点，切勿盲目下单。
As mentioned earlier, the $890-9,000 zone is an important support position, and each time you move back to this location, you can consider doing more boldly, and unless the zone is effectively broken, you will continue to focus on the lower space. It is important to remember that such short-line operations should set a small pressure position as a stop point, and do not lose sight of it.
最后提一下月线情况，虽然上影线未达到预期长度，但已形成，因此未来BTC继续下跌的可能性增大。故高位建立的空单可安心持有，即使最坏的情况也就是不赚不赔，无需过度担忧。而频繁短线操作则可能导致更大的风险，务必谨慎对待！
Finally, to mention the situation on the lunar line, although the upper line did not reach its intended length, it has developed, thus increasing the likelihood that BTC will continue to fall in the future. So the high-level bill is safe to hold, even if the worst case is no profit, no need to worry too much.
昨日短线看涨，原因在于价格稳定沿着上升趋势线反弹。不过，一旦晚间跌破此上升趋势线，则不能再盲目看多，以免承受不必要的亏损风险。目前短线压力位参考9200美元。
Yesterday’s short-line rise was due to a rebound in price stability along the upward trend line. However, once the rising trend line is broken at night, it can no longer be blinded to avoid the risk of unnecessary losses.
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