What does the cartoon on the health code mean?

In the health code, this cartoon means that COVID-19 has been vaccinated. Because it is a health code, it is surrounded by Phnom Penh, and the injection and shield are added in the upper left corner, so the page shows that COVID-19 vaccine has been vaccinated, which is also a reflection of the completion of vaccination in COVID-19. For people who have not been vaccinated with COVID-19 vaccine, their health code has no yellow border. The health code has a yellow border, indicating that COVID-19 vaccine has been vaccinated, but if it is all yellow, it is a yellow code. Once the health code becomes yellow, you need to pay attention.