translation.en: They emerged over the years when immigrants from the countryside came to the cities looking for work, like cities within the cities, known for problems like crime, poverty, and the violent drug war between police and the drug gangs.
translation.zh: 随着周边村民进城务工这个社区逐年壮大起来。 如同城市里被分割出的又一座城， 贫民窟以犯罪，贫困以及 警察与毒品团伙之间的暴力冲突这样的问题而闻名。