China has experienced rapid economic growth and development over the last 25 years, bringing hundreds of millions out of poverty and achieving a growth rate of 9% annually. Its economy is expected to triple in size over the next 15 years and may surpass the US by 2039. Additionally, China has significantly expanded its military capabilities in recent years, developing new missiles, aircraft, and naval vessels, though its goals remain economic growth and regional stability rather than conflict with the US.