China News Service, July 5th. The Chinese Embassy in Canada issued a notice on its website on July 5th. According to the requirements of relevant domestic departments, people returning from a temporary flight starting from today must carry out the new crown virus nucleic acid within 120 hours before the flight departure Testing, and boarding the aircraft with a negative nucleic acid test certificate issued by the relevant testing agency. Other existing epidemic prevention requirements (health code, body temperature detection) are still valid.