Studying?

The next day, everyone in the Lu mansion was busy with their activities when they saw a young boy entering the house followed by the housekeeper. 

"Good sir, how did my son offend you?" Lu Zhaolin asked as he saw the boy dressed in black pants and a white shirt. He was sure that the boy was not his son's friend as the latter was quite refined and polished to look at. 

"Greetings to Mr Lu, I'm Gu Shangyan and I'm here to meet Lu Xuan," Gu Shangyan properly greeted the middle-aged man. He could tell even without knowing the man that he must not share a very harmonious relationship with his son. 

"Child, I should beware about the consequences of befriending children such as my son," Lu Zhaolin replied. "You should focus more on studies and less on befriending delinquent children."

"Mr Lu, I'm the tutor school assigned to Lu Xuan," Gu Shangyan replied with a smile.