A St. Louis Fed Economic Synopses essay says China is using capital controls and other tools to resist yuan devaluation pressure. It cites options pricing from September 2016 that implied a 22 percent chance of a 10 percent devaluation within a year.
Rate hikes that would support the yuan could slow the economy.
Yuan defence measures that tighten money or limit capital could slow Chinese growth and feed demand. The effect on feed prices is indirect and the analysis is dated.
After 169 past neutral macro events, Chinese Yuan (CNY per USD) moved a median +0.0% over 5 sessions (50% higher; middle half -0.3% to +0.2%), and -0.0% 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.