This unsub chose a closed community on purpose.

不明嫌疑犯刻意地选择了封闭的社区。

They document life in Manhattan's Chinatown at a time when it was one of the most closed communities in New York.

这些照片记录了曼哈顿唐人街上的生活，当时它是纽约最封闭的社区之一。