The implementation of the policy was harsh and there were strict penalties: the 'Granny Police' watched over couples of childbearing age, and if a couple had more than one child, both parents would lose their jobs.The local government would issue a fine large enough to bankrupt the family and worse, the 'illegal' child would not be given a 'household register' which was necessary for school enrolment and applying for jobs.Throughout the 1970s politicians sought to bring about a drastic reduction in family size as they realised that a huge population threatened to outgrow the available resources.
Three fire engines and one helicopter took an hour to extinguish the blaze, which took place in an industrial area called Zona Franca, according to local media.
It comes after two terror attacks in Barcelona and nearby Cambrills killed 14 people and injured 130.
What was the Great Leap Forward, which had such a profound influence on Chinese society?
1958 was an important year in the Communist revolution: the Three Red Flags (the 'General Line', the 'Great Leap Forward' and the 'People's Commune') were put into effect. China like the former USSR employed planned economic developments.
This has had a profound impact upon its population structure.