A student wearing a face mask walks at York University in Toronto, Canada, on Oct. 20, 2020. Under new exemptions to Canada's coronavirus travel restrictions, international students attending approved colleges and universities can travel to Canada from Oct. 20. To be allowed into Canada, international students approved for a study permit must be attending a Designated Learning Institution with a COVID-19 readiness plan approved by their provincial or territorial government. (Photo by Zou Zheng/Xinhua)