Step 1: Open "Healthy Wuhan", click on the "Service" page at the bottom, find the primary school health card, and click Enter.
Step 2: Click "Download Electronic Health Card" on the page to download the static code to the photo album.
Step 3: Open the mobile phone gallery, find the downloaded health card, click "More" in the lower right corner, and then click "Print or Generate PDF" in the menu.
Step 4, connect the printer and click "Start Printing" at the bottom of the page to complete the production of the two-dimensional code card for nucleic acid detection.