The young man and woman visited the Grange for the first time because of simple interest. They opted to watch how strange Lintons spend their evening and make fun of them. Catherine and Heathcliff compared the siblings’ lifestyle to what they used to have at Wuthering Heights.
Detailed answer:
The novel Wuthering Heights addresses the issue of social stratification. Emily Brontë contrasts the family estates of Earnshaws and Lintons. She shows how strongly their origins, upbringing, and way of life differ. Wuthering Heights personifies anxiety, violence, and unconscious feelings. Thrushcross Grange is more about harmonious existence and home comfort. Heathcliff and Catherine represent the former and dream to become actual rebellions. They want to avoid multiple rules and restrictions imposed on them by their older brother Hindley. On the contrary, Edgar and Isabella are educated, well-mannered. However, they are arrogant and nervous children of Lintons.
One day Catherine and Heathcliff, after punishment for minor misconduct, decide to enjoy freedom one more time. They escape from their own house to see how Lintons spend the Sunday evening. The boy and girl are impressed by the interior of the house and its residents’ conduct. They laughed at Isabella and Edgar for making a fuss regarding a mutt they both wanted to play with. Then Earnshaws scare Lintons on purpose. They, in panic, release a bulldog that mauls Cathrine’s leg. It was the first time the children belonging to opposing families met each other.
Cathrine spent more than five weeks in Thrushcross Grange. That changed her mind and distanced her from her step-brother. Emily Brontë turns to this episode of spying on Mr. Linton’s children to highlight the differences between the two families. It is where the constant search for true feelings of Earnshows encounters the personal comfort of Lintons.