@haejin I dove into MACD definitions as a new trader which helped me understand this post. A MACD the uninitiated is a difference of two functions, you take the exponential moving average of 26 days "ema(26)" minus an ema(12). It plots a moving average that lags behind the price which is the MACD signal Haejin refered to. When it crosses over, it signals a change from bear to bull.
As it dips a bit more, the MACD will reflect the recent impulse and will proceed further.