This is the 837th most frequent Arabic word.
حينها
At that time.
The word 'حينها' is used to refer to a specific moment in time when an event occurred.
حينها شعرت بالسعادة الكبيرة.
At that moment, I felt great happiness.
Here, 'حينها' links the event of visiting the library with the decision to borrow a book, indicating the time of the subsequent action.
زرت المكتبة وحينها قررت استعارة كتاب جديد.
I visited the library, and at that time, I decided to borrow a new book.
In this sentence, 'حينها' connects the past living situation with the habitual action of walking to work, emphasizing the temporal relationship.