How did Fredrick trick Napoleon in chapter 8 of animal farm?

In Chapter 8 of "Animal Farm," Frederick tricks Napoleon by paying him with counterfeit money for a pile of timber. Napoleon later discovers the counterfeit money and decides to attack Frederick's farm, Pinchfield. However, Frederick and his men are prepared for the attack and end up blowing up the windmill on Animal Farm. This event symbolizes the betrayal and manipulation that often occur in political power struggles.