China's expanded visa-free policy introduced last year has sparked a wave of international travelers eager to explore the "China Travel" experience to see what China has to offer. With better infrastructure and improved tourist services, visitors are enjoying local flavors, exploring iconic Chinese landmarks, and of course diving into the vibrant Chinese culture. As they walk among the skyscrapers, many are enthralled by the modern vibe of China. The phrase "city bù city?" has created a buzz on Chinese social media. Why is that?