des moines iowa president-elect donald trump say thursday unite state need improve relationship china criticize economic policies failure rein north korea one important relationships must improve improve relationship china trump tell rally iowa unite state china world two big economies china market economy say play rule know time go start trump criticize china repeatedly presidential campaign draw diplomatic protest beijing last week speak phone president tsai ing-wen taiwan china consider wayward province first top-level contact taiwan u.s. president-elect president since president jimmy carter adopt one-china policy 1979 recognize beijing government trump keep criticism beijing rally part thank tour express gratitude state help win upset victory democratic presidential nominee hillary clinton last month massive theft intellectual property put unfair tax company help menace north korea like at-will massive devaluation currency product dump trump say china wonderful right china currently view currency manipulator either u.s. treasury department international monetary fund world trade organization say chinese tariff import goods generally high u.s. tariff trump bring pick ambassador china iowa governor terry branstad onstage say branstad always encourage say anything negative china state many friends trump say branstad would tell branstad say chinese president xi jinping 30-year friendship iowa governor visit china least six time xi iowa twice trump repeat campaign message plan prioritize unite state american workers global interest trump administration take office jan. 20 would focus two rule buy american hire american say add would keep pressure company move job overseas trump say u.s.-china relationship must improve