China's staggering 40 years of change in pictures
Forty years ago, China introduced major economic reforms - lifting hundreds of millions of people out of poverty and leading to it becoming the second-largest economy in the world.
Here's the story of how China changed - in pictures.
This is what Chang'an Avenue - a major street in the capital Beijing - looked like in 1978.
Four decades on, the street looks pretty different.
Car ownership in China has soared - there are now over 300 million registered vehicles in the country - while bike ownership has dropped.
It's a result of China's urbanisation and economic growth - but has also come at a price.
Frequent traffic jams in many cities have led to licence plate quotas being imposed.
And the World Health Organization says more than .
Compare a 1978 shop window...
... with one from this decade.