US is waging a tech war against this Shenzhen district

Shenzen has grown from a fishing village of 30,000 people to a sprawling manufacturing and innovation megacity of more than 13 million.

Every lunchtime hundreds of young Chinese tech workers spill out of their offices onto streets in the Yue Hai district of Shenzhen, eager to grab tables before restaurants fill up.

The area – home to some of China’s biggest names in technology, including social media giant Tencent, telecoms maker ZTE and drone giant DJI – is often called China’s Silicon Valley.