What proof does Tibet need to return to Fuling?

According to relevant information, it takes 48 hours for Tibet to return to Fuling for nucleic acid testing. According to the announcement of epidemic prevention and control issued by Fuling District CDC, people who return to Fuling from other places need to show their 48-hour nucleic acid test certificate before they can enter Fuling, and they need to be quarantined at home for 14 days, so it takes 48 hours for Tibet to return to Fuling.