When I first saw the four words of "Ruyu Appointment", I thought it was something between "Shandong" and "Henan". Then I thought, Shandong and Henan have nothing to do with each other, people from Shandong like to eat green onions, while people from Henan like garlic. Could it be something between "green onion" and "garlic"? But what's the relationship between "green onion" and "garlic"? Could it be...