Englishman,
In 2004 I went to Chinese Embassy in person with my visa application form etc and paid about £50 for a multiple entry Tourist visa valid for 6 months.
Absolutely no hassle. No questions. Very smooth. Visa granted.
Took just a couple weeks.
I know it was a long time ago but I cannot imagine it's gotten more stringent. Probably it's more expensive.
Did something happen that prompted you to ask the question?
I remember that passing through immigration was a breeze also.