My brother's unreliability killed my sister

Avoid the war first, and let’s not talk about difficult topics such as human nature. It can only be seen from the development of the story of Chint and his sister’s life after losing his parents that Chint should take a large part of the responsibility for his sister’s and his own death.
In the movie, my brother is at least 15 years old, the age of a junior high school student or even a high school student, but we saw that when he was staying at my aunt's house, he only knew how to run around with his sister, play crazy, and would not help my aunt. Do you do what you can at home? Although you brought something, how long can you eat it? Even if you eat at my house and live at my house, you haven't shown any gratitude to me yet. The food is so tense, if I were that aunt, I wouldn't have a good face for him.
After moving out, although he tried very hard to find food, using half-stealing and half-robbing, he was beaten to death in the end, wouldn't he give others, such as a farmer, to help him in exchange? Won't you grow some food near the bomb shelter yourself? And his sister was going to starve to death soon. He went to the bank to withdraw money, and he still had 3,000 yuan. Why did he go earlier?
Although Chint wanted to take good care of his sister, his various unreliability still killed his sister

PS: This also shows that doing things is not done with enthusiasm, but also in a proper way

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