I received a short message from 100 10 today.

It should be a scam message. I also have this information. Don't believe it. The website of China Unicom is only 100 10.com, and there is nothing to add. I advise you to ignore it, saying that this website is also quite funny, and actually ask people directly for the bank payment password. The normal binding process is not like this. And it actually says China Mobile's online business hall. Obviously, he intends to install Unicom.