China's new low-altitude economy is taking off with flying taxis and food delivery drones, but the industry faces obstacles, including strict airspace controls. In the neighboring city of Shenzhen, food-delivery drones have become an integral part of everyday life and serve as a unique tourist attraction, despite the premium pricing for such services. At the waterfront park encircled by towering skyscrapers, Polish visitor Karolina Trzciańska and her companions placed a phone order for bubble tea and lemon tea, simply to experience the novelty.