Feudalism ended in England in the 16th century, hundreds of years before the industrial revolution http://www.tiscali.co.uk/reference/encyclopaedia/hutchinson/m0006447.html
Sorry I don't have the books with me right now (until next week), and I didn't learn them by heart. I seem to also remember that there were machines before the "revolution" - maybe it still was a change of political circumstances that permitted the revolution (free trade between countries, possibility of ownership giving incentives for entrepreneurs etc.). Certainly several factors worked in combination, it's not like the invention of a particular machine triggered it all.
I also seem to remember that China has the fewest farmland per person of all countries in the world. I don't think anybody can simply be a farmer. I know I couldn't just be a farmer in my country.
In fact the history of every country that industrializes is the same. People work on farms till jobs appear in factories, and then they move to the cities-- not because it isn't possible to work on farms anymore, but because it's such a grim life.
And incidentally, feudalism was over in England centuries before the Industrial Revolution got started in the late 18th century.