The glasses case in your hand might come from Wenzhou, in east China. One company here produces 150 million glasses cases each year and works with 95% of the world's eyewear brands. Wenzhou's entrepreneurs are known globally and form the backbone of the city's economy. In 2025, Wenzhou's GDP surpassed 1 trillion yuan (about $143 billion) – a new milestone for the city. China now has nearly 30 cities above this threshold.