Chinese companies, many of which are state-owned, have ploughed a staggering $2 trillion (£1.6tn) into foreign businesses and construction projects since 2005, buying up everything from prestigious banks and hotel chains to major energy producers. Using the data of the American Enterprise Institute's China Global Investment Tracker, we give you the lowdown on the Asian superpower's investment frenzy and reveal 25 of the biggest and most high-profile purchases.