Yes, China's isolation has had a significant impact on its economy in the past. However, it's important to note that China has made efforts to open up its economy to the world in recent decades, resulting in significant growth and increased international trade. China's economic growth has been driven by various factors, including government policies, infrastructure development, and a large domestic market. While isolation can have negative consequences, China's approach has shifted towards greater integration with the global economy, which has been beneficial for its economic development.