China: What caused its rapid industrialization?

In the 1960s, around 60% of the Chinese labor force were employed in agriculture. The figure remained more or less constant throughout the early phase of industrialization between the 1960s and 1990s, but in view of the rapid population growth this amounted to a rapid growth of the industrial sector in absolute terms, of up to 8% per year during the 1970s. By 1990, the fraction of the labor force employed in agriculture had fallen to about 30%, and by 2000 still further.
With China going from a communist country to more of a free market economy, restrictions on exports, imports and the amount a certain company could sell was lifted, meaning that companies had a lot more freedom to do exactly what they want. China's government also stated that to be rich is glorious and so many aimed to improve their finances. With exports, imports and amount of produce rising drastically, there was a lot of m,oney to be made and as China has such such a large population, there was also a very large cheap labour force to back up these advances.