Four years ago, Xi Jinping set himself up to become China’s leader indefinitely.At last week’s Communist Party congress in Beijing, he stepped into that role, making a notable sweep of the country’s other top leaders and placing even greater focus on national security.Guest: Chris Buckley, chief China correspondent for The New York Times.Background reading: At the congress, Mr. Xi didn’t mention two long-repeated maxims. To many, it’s a warning of the turbulent times to come.Mr. Xi has created a new ruling elite packed with loyalist officials primed to elevate his agenda of bolstering national security and turning China into a technological great power.For more information on today’s episode, visit nytimes.com/thedaily. Transcripts of each episode will be made available by the next workday.