I checked one combination for which I am fairly aware of the details and I find multiple errors: USA, visiting China. It tells me 30 day stay, 90 day visa val

I checked one combination for which I am fairly aware of the details and I find multiple errors: USA, visiting China. It tells me 30 day stay, 90 day visa validity--but down in "tips" it correctly says I would get a 10 year visa. (In practice--I hold a 60 day stay visa, my (China-born) wife has a 90 day stay. These are by no means our first visas, though.) It also says registration is required within 24 hours--this is the rule for urban areas, in rural ones it's 72 hours. Also, in practice this normally does not matter as the hotel does it for you--you just need to do it yourself if you're not in a hotel. It also lists financial document requirements that AFIAK are not expected of Americans.