Overseas Chinese immigrants return to China.

No I only do tourism, international tourism. As far as I know, there are indeed many people who immigrated from your side, and many of them went to Europe. But most of them go out through illegal channels. Even some people can't get out of the local area, so they go to the north through "snakeheads", buy rural hukou, then apply for passports here, and then apply for visas from here. Very dangerous. Many people were arrested when they left Beijing Customs. I guess the boss you mentioned is a "snakehead" or a liar. You better be careful.