At present, the global COVID-19 epidemic is still very severe, and the risk of cross-infection in international travel is relatively high. It is recommended that you "No necessary, no travel". If you really need to go to China, in order to avoid the risk of cross-infection when transiting through multiple countries, please be sure to transit from Iceland to China through one country, and upload your itinerary and the residence certificate when applying for the health code. If your itinerary does not meet the above requirements, it may affect you to obtain a green health code (health statement) to take the flight to China.