C572 One old one young one child

"I'm not unhappy." The King Nanshan explained.

"Alright, then let's find a house and knock on the door first." As Gu Lvhan spoke, he walked forward with large strides.

We found a random house, knocked on the door, but did not open inside.

"Is there no one inside? Why didn't you open the door? " I really don't understand.

Although the door was not open from the inside