Third Layer: Establishing a systematic approach

Abandon complicated theories and use simple rules to respond to the market. Learn to discern what to keep and what to discard; the initial trading framework takes shape, but execution is often affected by emotions.

Fourth Layer: Strict adherence to rules
Decisively take profits and cut losses; account fluctuations tend to stabilize. Although able to trade steadily, still contemplating the essence of trading and waiting for a breakthrough.