Photo taken on March 23, 2020 shows the empty Monastiraki district at the foot of Acropolis in Athens, Greece. Greece proceeds to a 14-day nationwide lockdown effective from Monday in the context of confinement measures aimed to contain the further spread of the novel coronavirus, the government announced on Sunday. (Photos: Xinhua)

Policemen check drivers for special permissions that are needed to be outdoors in Athens, Greece, March 23, 2020. Greece proceeds to a 14-day nationwide lockdown effective from Monday in the context of confinement measures aimed to contain the further spread of the novel coronavirus, the government announced on Sunday.

A policeman checks drivers for special permissions that are needed to be outdoors in Athens, Greece, March 23, 2020. Greece proceeds to a 14-day nationwide lockdown effective from Monday in the context of confinement measures aimed to contain the further spread of the novel coronavirus, the government announced on Sunday.

Photo taken on March 23, 2020 shows the empty Monastiraki district at the foot of Acropolis in Athens, Greece. Greece proceeds to a 14-day nationwide lockdown effective from Monday in the context of confinement measures aimed to contain the further spread of the novel coronavirus, the government announced on Sunday.

Policemen check drivers for special permissions that are needed to be outdoors in Athens, Greece, March 23, 2020. Greece proceeds to a 14-day nationwide lockdown effective from Monday in the context of confinement measures aimed to contain the further spread of the novel coronavirus, the government announced on Sunday.

Policemen check drivers for special permissions that are needed to be outdoors in Athens, Greece, March 23, 2020. Greece proceeds to a 14-day nationwide lockdown effective from Monday in the context of confinement measures aimed to contain the further spread of the novel coronavirus, the government announced on Sunday.