Former Australian Prime Minister Kevin Michael Rudd answers questions from media at a book promotion event during the Penn Wharton China Summit in University of Pennsylvania in Philadelphia, Pennsylvania, the United States, April 14, 2018. Successfully lifting hundreds of millions of people out of poverty is the most remarkable achievement China made during its 40 years' reform and opening-up, Australia's former Prime Minister Kevin Rudd has said.(Xinhua/Wang Ying)