What are some jokes that describe the smart people in Henan?

Jokes describing the intelligence of Henan people include "The crows in the world are as black as the crows, but the people of Henan are smarter than any other" and "Everyone in the world knows that the people of Henan are the smartest. If you don't believe me, take a look and lend me your ear." These jokes all praise Henan people for being smart and capable, and are known as "Cultural Henan". There is a splendid history and culture and rich human resources. Therefore, Henan people are generally well-educated, open-minded, and good at thinking and innovation. At the same time, he also has strong adaptability and practical ability.