The study looked at how Chinese agriculture improved from 1984 to 1993. They used a method called Data Envelopment Analysis to see changes in productivity, technology, and efficiency. Most provinces in China saw an increase in productivity, especially due to technical progress. This means that using better technology was the main reason for the growth. Provinces with lower technology can still improve by becoming more efficient. By focusing on technical efficiency and education, China can continue to boost productivity in agriculture.