After the I-730 interview of American relative immigrants (seeking professional answer)

Hello, your situation is I730 immigrant. After the interview, you will be asked to wait for news, which is the visa package. It was not signed on your passport, but two envelopes, which were handed over to the airline in transit. Neither can be opened. When you leave the country, you should also take a chest X-ray taken during the physical examination.

What is being distributed now is the visa package for the interview in March-May, and you must go to the United States within six months after getting the visa package. Otherwise it is invalid!