People are seen at an outdoor terrace of a restaurant in Budapest, Hungary, on May 19, 2020. The open spaces of restaurants and hotels reopened in Budapest on May 18. (Photo by Attila Volgyi/Xinhua)

People are seen at an outdoor terrace of a restaurant in Budapest, Hungary, on May 19, 2020. The open spaces of restaurants and hotels reopened in Budapest on May 18. (Photo by Attila Volgyi/Xinhua)

People are seen at an outdoor terrace of a restaurant in Budapest, Hungary, on May 19, 2020. The open spaces of restaurants and hotels reopened in Budapest on May 18. (Photo by Attila Volgyi/Xinhua)