My hometown is in the northwest of China. It is not a big city; it has a population of just over 250 thousand. It used to play an important role on the ancient Silk Road, so now it is known for its long history (historical significance) and rich culture. The weather is so different from Shanghai where I live now, it is dry and has little rain all year round. It has four distinct seasons. I moved to Shanghai for college many years ago, and I chose to work in Shanghai after graduation for more(better) job opportunities. But some of my classmates also went back to our/their hometown for a steady and easier life. They often chose to work as a civil servant in our/their hometown which is a decent job, but also because there were not many job choices(options) in a small city. My parents are still living in our hometown. Every time I go back I, feel a massive change happening(taking place), the speed of development is so fast. I hope my hometown can get better and better. "It is NOT a big city with a population of just over 250 thousand" : Writing it this way is not very clear. The reader may need to read it a few times to get it. Better to make the changes suggested above to make it clear. "It is a small city with a population of just over 250 thousand" : This is fine, it is clear. Not sure what you meant by "earth-taking change." I'm guessing you meant "massive" or "tremendous change."