Knowing this land, their thoughts are worth suffering, that is to say, people in this land live in pain. According to relevant information, this sentence was said by Ba Jin, which means that when you understand the historical background, you will understand how hard people live in this land, so that their thoughts are worthy of this difficult land and they can live in this land. In a word, when you get to know the people in this land, you will find that their thoughts are worth suffering.