What are the travel code, nucleic acid code and health code for Alipay to report back to China?

Alipay's itinerary code, nucleic acid code and health code are proof. Prove that you are not infected with COVID-19 virus and have no history of living in high-risk areas. Travel code, that is, communication big data travel card, is a free inquiry service provided by ICT Institute in collaboration with China Telecom, China Mobile and China Unicom. Health code is a personal two-dimensional code based on actual real data, which is generated by citizens or people who have returned to work on their own online declaration and background audit.