Original sentence: This region contains 71.4% of mainland China's area, but only 28.8% of its population (end of 2002) and 16.8% of its total economic output (2003).Under the leadership of Deng Xiaoping, the PRC began to adopt reform its economy in 1978 from a command economy to a market economy
Edited sentence: This region contains 71.4% of China's area, but only 28.8% of its population (end of 2002) and 16.8% of its total economic output (2003).Under the leadership of Deng Xiaoping, China began to adopt reform its economy in 1978 from a command economy to a market economy