He added that open-air markets will be closed in principle.
Tightening the lockdown rules, he said that from Tuesday, people will only be allowed to exercise one hour a day, within one kilometer of their home.
Cases have been confirmed in 100 to 150 out of 700 elderly care centers in the Ile-de-France region, which includes Paris, according to Frederic Valletoux, the head of the French Hospitals Federation.
But as the country's healthcare system comes under severe strain, Prime Minister Edouard Philippe said he was in favour of localised curfews, stressing the decision for those lay with local authorities.
Expressing his honest sympathies to and firm support for the French government and people, Xi said China is willing to continue to provide support and assistance within its capacity for the European country.
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Meanwhile, a hospital in Washington state - once the centre of the U.S. outbreak - said it could run out of ventilators by April. Senate Majority Leader Mitch McConnell has urged senators to "signal to the public that we're ready to get this job done".
"The period of confinement can still last several weeks", Philippe told French television TF1 news.
Salomon reported 240 new deaths from coronavirus on Tuesday for a total of 1,100, an increase of 28% that made France the fifth nation to cross the 1,000-fatalities threshold after - China, Italy, Iran and Spain.
"The government must impose a national 8pm curfew". Several are already in place, including in Nice on the Mediterranean coast.
"To deal with this wave of the epidemic... we must strictly, very strictly, respect these restriction measures", said Philippe.
Under the reviewed lockdown restrictions, funerals may be attended by 20 people only. They recommended insisting on valid reasons describing the degree of importance of the medical visits.