Tourism sounds good. But for labor? I think they have advanced machines for that. Earth has a lot of proteins, i think that's what they need.

If aliens can get here, their technology must be far beyond ours.

It's time to build Gundam

That's right, the government is too damn corrupt right now, and not only the local. Still somebody there assume China to be a communist country? The politicians are too busy with money and women to care about these sh*t stuff. So people solve the problems in their own ways.