It's not as messy as you think. I spent a year and a half in Belem, Brazil. As long as you live in a rich area, don't go out at night, don't show off your wealth when you go out, and don't take your mobile phone when you walk. Usually nothing. Stayed for more than a year, only got robbed five times. I saw a street killer who was blackmailed three times. Another time, if I didn't run fast, I was almost kidnapped by a black man, but it was nothing. You must be brave, cautious, strong and witty. The point is to run fast. As long as you go out, you have to be highly vigilant and always pay attention to the people around you. I didn't get used to it until I returned to China for half a year. I remember going shopping with my colleagues half a month after I came back from Brazil, and there was a flat tire in the back. My brother immediately squatted on the ground and hugged his head. Other colleagues suddenly dumbfounded!