Technology: Linwei Deng, the former Google engineer accused by the United States of stealing secret files on artificial intelligence for China

Manage consent settings on AMP pages

This setting only applies to AMP pages. You may be asked to set these preferences again when you visit non-AMP BBC pages.

The lightweight mobile page you visited was built using Google's AMP technology.

Collect absolutely necessary data

In order for our websites to function, we store certain limited information on your device without your consent.

Read more about the basic information we store on your device to operate our websites (in English).

We use local storage to save your consent preferences on your device.

Data collection is optional

By consenting to the collection of data on AMP pages, you give us consent to show you personalized ads that are relevant to you when you are located outside the UK.

Find out more about how we personalize ads on the BBC and our advertising partners.

You may opt out of receiving personalized advertising by clicking “Opt Out of Data Collection and Tracking”. Please note that you will still see ads, but they will not be personalized to you.

You can change these settings by clicking “Advertising Choices/Do Not Sell My Information” at the bottom of our page at any time.

• Acceptance of data collection and follow-up.
• He declined data collection and follow-up.