On the technical side, indicator resonance often provides more reliable signals. Here is a trading logic based on the combined use of MACD and KDJ, broken down into three core scenarios.

**Entry Timing** is the easiest to identify. When MACD shows a turn below the zero line and at the same time KDJ forms a golden cross—that's a bullish double golden cross below the zero line, a classic bullish signal, and you can consider entering. Another entry point is when MACD is already above the zero line without divergence or death cross signs, and KDJ also gives a golden cross; at this point, you can also enter.

**Waiting Zone** requires caution. If MACD is above the zero line but shows no clear divergence or death cross, yet KDJ forms a death cross—that's usually a false signal. It's best to judge based on the specific MACD trend and avoid impulsive follow-up.

**Exit Signal** should be executed decisively. When MACD and KDJ both form death crosses simultaneously, or when MACD has fallen below the zero line along with KDJ death cross, it's time to exit without hesitation to prevent short-term rebounds from causing losses.

Practical tips include six points: for large positions, short-term can be layered (short-term in 3 layers, medium-term in 5 layers); small positions should focus on high-confidence targets like second-board leaders; in a two-choice situation, take both and then favor the weaker one; for long-term lurking, target concepts-rich, low-priced stocks that have issued convertible bonds in the past; prioritize old leaders over new ones among second-board leaders; if worried about high-position risks, don't hold onto low-priced stocks blindly—try small positions to test the strength of strong stocks.