Definitely a good question.

How actually compatible is Chinese language with other cultures? Will it have to adapt and simplify its script?

I think Standard International English stands better chances of remaining THE language of exchange in the years to come, though.

But i think Chinese is already a most popular language on the world . 

But if you are talking about the traditional Chinese ? it is not.

In mainland chinese , they are not using the traditional chinese.

For me ? I dont count "Simplified Chinese "  as "Chinese "

But i think Chinese is already a most popular language on the world . 

But if you are talking about the traditional Chinese ? it is not.

In mainland chinese , they are not using the traditional chinese.

For me ? I dont count it as "Chinese "

You are looking on the surface of China , if you look inside .

You will know China Government People treat China is just a gold mine , not a country.

oh you are from new zealand ?

I hope those Mainland Chinese did not cause you too much trouble about the milk powder there.

I feel sorry to the whole world , China can spend billion money on Olympic Games , Space project .... but they cannot produce some safe food or even a can of milk powder.