My sister wants to go abroad, so it’s best to do it in Tianjin.

Which method is better to choose? Study abroad or work? How to choose a formal intermediary company?

As for which way you choose to go abroad, I suggest you find a more formal immigration company to consult with a consultant, so that you can have a good idea, and it has a nationally recognized reputation and better service quality. A better agency can handle it. My husband handled it at Pacific Garda of Tianjin Immigration Company. You can learn more about it online or through other channels. After all, it is for your sister.