If a Break of Structure says "trend continues," a Change of Character says "the trend may be over." It's your earliest reversal signal — and one of the most valuable reads in Smart Money Concepts.
Picture a downtrend: lower highs, lower lows. Price is quietly making lower lows... then suddenly it rallies and breaks the most recent lower high with force. That break against the prevailing trend is the CHoCH (also called a Market Structure Shift, MSS). The market's character just changed — sellers were in control, and now buyers have taken the wheel.