China has declared a "people's war" on the virus and the whole nation is working as one to combat it, Xi said.
He was among the 8 doctor who had tried to alert authorities in December.
All cases of the nCoV coronavirus will be treated as emergencies.
'Some of the guests said they were not coming'
Funding will help strengthen detection, isolation and treatment efforts; protect at-risk populations.
Any residents who violate the order will not be allowed to return to Saudi Arabia.
The couple went to China on January 24 to spend Lunar New Year with family.
New virus has infected more than 28,200 people globally.
The wedding reception was held without the groom, as he was under observation for coronavirus.