People in China have for decades faced serious hurdles when trying to relocate around the country, whether to find a new job or a better school. One is known as hukou (pronounced who-co) — a government system that registers every household and determines where people can live, work, go to school and claim benefits. There’s a growing consensus, however, that it may be holding the economy back. President Xi Jinping, who argued for abolishing the hukou in his doctoral thesis, has made overhauling