I guess that depends on what you consider to be "causing trouble", but that works. The reason that you have a certain amount of fear of China ... not conquering the world perhaps, but conquering other nations in the region ... comes from largely from the fact that the PRC has a violent track record with the countries that share a border with them:
USSR (now Russia and other former Soviet states)
Of that list, the People's Republic of China has invaded (for varying reasons):
What about those that they have not invaded? Well, other than Myanmar and Pakistan, none of the nations are worth bothering to worry about. Pakistan has gotten a lot of help from China in their fights with India. Myanmar alone is not an ally and has not yet been attacked by the PRC. Especially if you live anywhere close to China, that past history is worrisome.
Also, the Qing Dynasty was a dynasty of conquest. Many regions that were never ruled by any other dynasty were conquered and added by the Qing. It could be argued that the conquered nations were better off, but it is still conquest. To different degrees, every dynasty was established by conquest. But its true that they most certainly have not ever tried to conquer the world.
Bear in mind, I'm not claiming that China IS out to conquer the world, I'm just pointing out some items from their history that could give one that they might try it at some point. I prefer to be optimistic about it.
"It is well that war is so terrible, else we should grow too fond of it."
- General Robert E. Lee
Warning, critical pebkac error in the iD10t!! pebkac\wtflolurpwnzd\snafuroflmao.exe called iD10t, iD10t failed to respond!! System in danger!!
"It takes a big man to admit when he's wrong. I am NOT a big man." -Chevy Chase