The market fluctuated sideways in the first half of the week, with bulls and bears in a stalemate; in the second half, the major currency broke new highs and surged. Two types of short sellers were harmed: those who held positions without stop-losses and got trapped, or those who guessed the top and added positions against the trend, both incurred losses. Insight: Trading requires emotional control; calmness is the 'fuse' for position management.