SMA vs EMA | 简单均线VS指数均线

Simple Moving Average (SMA) gives equal weight to all periods. Exponential Moving Average (EMA) gives more weight to recent prices, responding faster. EMAs are preferred for shorter timeframes and entry timing. SMAs offer cleaner signals on higher timeframes. 简单移动平均线对所有周期赋予相同权重。指数移动平均线对近期价格赋予更多权重，响应更快。

Golden Cross and Death Cross | 金叉与死叉

Golden Cross: 50-day MA crosses above 200-day MA — major bullish signal historically preceding significant uptrends. Death Cross: 50-day crosses below 200-day — bearish signal. These are lagging but reliable long-term trend indicators. The 2023 Golden Cross preceded Bitcoin's rally to new highs. 金叉：50日均线上穿200日均线——主要的看涨信号。死叉：50日均线下穿200日均线——看跌信号。

MA Crossover Systems | 均线交叉系统

Common MA pairs: 9/21 EMA (short-term scalping), 20/50 EMA (medium-term swing), 50/200 SMA (long-term trend). Entry on crossover, exit on reverse crossover. Add RSI filter to avoid trading during ranging conditions. MA crossovers work best in trending markets. 常见均线组合：9/21 EMA（短线）、20/50 EMA（中波段）、50/200 SMA（长线趋势）。

MA as Dynamic S&R | 均线作为动态支撑阻力

In uptrends, the 20 EMA and 50 MA often provide support during pullbacks. In downtrends, they act as resistance. The 200 MA is the ultimate bull/bear line — price above indicates long-term uptrend, below indicates downtrend. Multiple touches increase significance. 在上升趋势中，20 EMA和50 MA常在回调时提供支撑。200 MA是终极多空分界线。

Building a Trend-Following System | 构建趋势跟踪系统

Combine: (1) 200 MA for trend direction, (2) 50/200 crossover for major signal, (3) 20 EMA pullback for entry, (4) RSI above 50 for momentum confirmation, (5) Trailing stop at 20 EMA. This system captures major trends while filtering false signals. 结合200 MA判断趋势方向、50/200交叉作为信号、20 EMA回撤进场、RSI确认动量。