Penetrate the hidden costs and time traps of precious metals trading, and use quantitative accounting matrices to reconstruct the long-term principal protection network under different trading frequencies! This article provides in-depth compliant science on gold and silver CFDs and the core mechanism of futures: dismantles the "compound interest wear" of spreads and fees in short-term high-frequency trading, analyzes the erosion of net value by overnight interest (Swap) and monthly premiums in medium and long-term positions, and details how to combine the Asian, European and American global schedules with WMAX take-profit and stop-loss condition orders to achieve rational energy management with high winning rates and low losses.