By focusing only on a single variety, fluctuations are often amplified. This article uses the combination thinking in precious metals trading as a starting point to explain how to use the gold-silver ratio as a relative strength indicator, price difference and pairing trading ideas to transform part of the direction judgment into a relative strength judgment. It also analyzes the cost of hedging, including the phased failure of correlation, margin occupation and spread overnight fees, to help traders use hedging to reduce volatility when the correlation logic is clear. The content is for reference only and does not constitute investment advice.