Ye Tian did not knock on the door, but instead quietly entered the room through the house's skylight.
Perhaps he used Invisibility; they could see Ye Tian getting into the room, but the person inside, although sitting on the kang bed with eyes opened, seemed not to notice Ye Tian as he entered the room.
As they followed Ye Tian into the room, everyone could clearly see the face of the person sitting there.
This was the face of a middle-aged man, who appeared to be honest and simple.
However, the light emitted from the eyes of this person was not that of a simple man, as green light flickered within his opened eyes!
As for why they could see Ye Tian and the person inside the room failed to notice him,
perhaps it was a special Spell that blinded the other's green gaze.
Cai Xiangxiang was unlike the others; after clearly seeing the face of the middle-aged man in the room, she excitedly exclaimed, "That's my daddy!"