9 EMA (Fast): Tracks short-term momentum. Reacts quickly to price changes.
20 EMA (Slow): Tracks the intermediate trend. Smoother, slower to react.
9 above 20: Bullish bias. Momentum is pushing higher. Favor long setups.
9 below 20: Bearish bias. Momentum is pushing lower. Favor short setups.
Crossing: When the 9 crosses the 20, a shift in momentum is underway. Be cautious until the cross completes.