living and loving life is a good thing .................getting up and picking yourself up after a crash is a good thing................  holy shit, I survived/made it.............  yippeeeeee....happy ..

.I sent a pic home of a guy on the twentieth floor moving a banner around, totally freaked me out, I was shaking when I took the pic,    but he was like a flipping mountain goat, no problem.

I think we should not judge these folks.............  I think, if somebody in Canada. USA, Australia or Spain gets a little injury, they look to the government or if they can afford it, a lawyer to claim for their injury ...............  In China, they shake it off and get back to work, and I totally respect them for that ..........  and laughing is a good thing

Welcome Ernesto! I'm a BIG fan of your country's national futbol team!!! The Spanish Armada!! ^^ A Chinese gal that I used to work with mentioned that the Chinese laugh when uncomfortable. I would agree in part with that. (Certainly not the only reason.) 

Mr. Sports

They are laughing because they are nervous. You should try to smile more and not be so serious.

There are no safety issues, so many people, it doesn't matter if they loose a few. If you see someone go splat, it doesn't matter unless a Japanese caused it.

They want to show their ugly teeth?!!!...........They want to act funny which is not a normal thing in their personalities?!!!!!....................Drunk a bit more than a glass of beer?!!!!!..................You pick

They want to show their ugly teeth?!!!...........They want to act funny which is not a normal thing in their personalities?!!!!!....................Drunk a bit more than a glass of beer?!!!!!..................You pick

Maybe it's just part of their conditioned lifestyle. Like a student in school that tries hard to answer a question but the teacher just laughs and humiliates them. Like poorly skilled doctors who needlessly inflict pain on their patients in the name of "treatment" and then laugh at the anguish. Like the police here that laugh at the victims of petty crime. And then the ultimate annoyance - the officials in banks and institutions that get great amusement out of customers getting angry at mistakes that they, the bank or institution have made themselves.

I am sure that humiliation is a part and parcel of the Chinese psyche.

Espero que aprendas lo antes posible com se llevan las cosas por China, porque de lo contrario, sera totalmente dificl adaptarte.  A mi me ocure a diario las caracajadas y los dientes largos que se me ponen de cara cuando me tropiezo con mal educados e ignorantes. Pero, no todos son asi, pese a que los que mencionas son la mayoria. Intento sobrevivir pensando en los pocos educados que hay y me tranquizo. Luego, si se me ocure me poongo a reir con elles de ells desde luego. Es verdad, lo he hecho unas cuantas veces y me ha funcionado. Se quedan contrariados al verme y temen perder cara por lo cual se olvidande reirse de mi. 

Because they live in China! Believe me, the longer you live in China, the more you will laugh. It keeps you from going crazy!

they laugh because if they dont they would be crying all the time

I always assume it is because I forgot to zip my fly.