Cao Pi
In the past, when Cao Pi was still a youth, he once asked Cao Hong for a loan, but the stingy Cao Hong rejected him. Later, when Cao Pi was Cao Cao's heir apparent, he once asked Cao Hong to donate 100 rolls of silk but Cao Hong refused. Cao Pi bore a grudge against Cao Hong because of this. After Cao Pi became emperor, he found an opportunity to take revenge against Cao Hong. In one incident, when Cao Hong's retainers committed crimes, Cao Pi used the incident as an excuse to accuse Cao Hong of negligence and had him imprisoned to await execution. When his ministers tried to persuade him to spare Cao Hong, Cao Pi refused to listen.