Census takers are fanning out across China, aiming to visit 400 million households over 10 days. At last count in 2000, the country had 1.29 billion people, CNN said. For the first time, China will count foreigners in its census. They have to answer only eight questions, compared with the 18 that most Chinese will face. The questions focus primarily on identity, sex, ethnic group, household registration and education. The census results are to be made public in April 2011.