
China's central bank made its biggest net foreign exchange purchase in more than six years in November, buying 35.4 billion yuan worth as the yuan strengthened. Robust exports and a growing trade surplus drove the currency higher.
Heavy PBOC dollar buying signals a policy effort to slow yuan appreciation, which tends to support China's dollar-priced import demand. The impact on grain prices is indirect.
After 31 past bullish policy events, Chinese Yuan (CNY per USD) moved a median -0.2% over 5 sessions (42% higher; middle half -0.4% to +0.3%), and -0.1% over 20.
Moves of each commodity's benchmark from the last close before the event. Historical reads pool past events of the same kind; they describe what happened, not what will. Not investment advice.