Does Jiaozuo need a health certificate to go to Zhengzhou?

No health certificate is required.

Those who successfully apply for green "health code" do not need to apply for COVID-19 health declaration card or health pass card.

"Henan Health Code" is used for travel, return to work and return to work during the epidemic prevention and control in COVID-19. Individuals declare through Alipay's "Henan Affairs Office" applet, which has cross-regional mutual recognition function.