Gong Yanqiu took out an ingot of five taels of silver and handed it to the waiter, saying, "Brother, I'll pay for the food and wine first. You can take the extra money." The waiter was surprised and said, "Sir, it's too much." Gong Yanqiu put the silver ingot in the food box and said, "It's not much. Don't mention it." Waiter bent down with a smile, "Thank you, sir!"! If you have been here for...