This is the 20th most frequent Russian word.
чтобы
"Чтобы" means "in order to" or "so that."
In this sentence, 'чтобы' introduces a purpose clause, expressing the reason or goal of the action.
Я изучаю русский язык, чтобы понимать русскую литературу.
I study Russian to understand Russian literature.
Here, 'чтобы' is used in a similar purpose clause, detailing the intention behind the action taken.
Мы ушли раньше, чтобы не опоздать на поезд.
We left earlier to not be late for the train.
In this example, 'чтобы' introduces an indirect request or reason for the preceding action.