Shi Xiaoya did not even knock on the room door and just pushed the door to the study open and went in.
Shi Guanzhong and the three of them noticed it as well, as they did not hear Shi Xiaoya knocking on the room door.
In fact, Han Zhuoling had told Shi Xiaoya about this early on.
That there were no secrets between the two of them, so there was no need for the rule to knock before coming in.
They were all family in their own home, so there was no need to knock no matter which room they went into.
Shi Xiaoya pushed the door open and said to Han Zhuoling, "Dad, Mom, and Older Brother are here. They just came in."
When he heard that, Han Zhuoling immediately put aside his work and followed Shi Xiaoya downstairs.
"Dad, Mom, Older Brother," Han Zhuoling immediately greeted when he saw them.
Shi Nancang would feel his teeth hurt every time he heard Han Zhuoling call him Older Brother.