MATIC
If the variety falls by a certain percentage, the loss must be resolutely stopped (about 2% for the short-term, 5% for the mid-term, and 10% for the long-term). This is inspired by Chinese chess.
When playing chess, look at seven moves. In a passive situation, you must lose the pawn to save the rook. Only by keeping the rook can you have the possibility of overturning the game.
The iron rule stop loss is mainly to avoid systemic risks and is not suitable for technical corrections, because a small pawn is better than a big car crossing the river.
