The eight-year-old son of Guangzhou businessman Terry Fang recently arrived at a blunt conclusion: Chinese tech is “cool”.The boy’s impression was formed not in the classroom, or even online, but through repeated exposure to real-world industrial settings.Earlier this year, Fang took his children to a local low-altitude aviation company, where they watched electric vertical take-off and landing aircraft navigate and avoid obstacles in real time.For China’s urban middle class, hi-tech...