Isn't this Du Zhongjing's eldest son, Lord Du? Is this an object? Is this a person or not?
Wang Yongzhu turned his head to look at Du Zhongjing: "Senior Brother, are your sons all like objects?"
Du Zhongjing chuckled and let it slide, not wanting to answer the question, and waved Lord Du over: "On this trip back to Jing County, be filial in front of your grandparents on my behalf. You must listen to your master's advice along the way and don't be naughty, understood? Also, don't slack off on your studies on the road. If there's anything you don't understand, ask your uncle!"
The arrangements were made perfectly clear.
Lord Du nodded and agreed, straightforwardly, and then looked rather maturely at Wang Yongzhu: "Master, I'm sorry to bother you on this journey."
