Original: For the description of the provincial atmosphere and the city's collective life, Clarín used techniques such as the internal monologue or the free indirect style, which makes the story be narrated by the characters themselves and allows the reader to penetrate in their intimacy.
Simplified: For the description of the provincial setting and the city's collective life, Clarín used styles such as the internal monologue or the free indirect style, which makes the story be told by the characters, not the narrator.