first step:

Log in to the APP, click on "Personal Center", select "Identity Authentication" and take the mainland ID card as an example:

The second step:

Primary authentication: select country: China, document type: ID card, fill in name + ID number, and click confirm.

third step:

Advanced authentication: Follow the prompts and click to submit the "front photo of my ID card", "the back photo of my ID card", "hold ID and signature", and click "confirm".