After 11 weeks of lockdown, people went outdoors and by the thousands boarded the first trains and planes leaving Wuhan as the last restrictions on movement were lifted Wednesday in the Chinese city where the coronavirus pandemic began.

Wuhan’s unprecedented lockdown was a model for countries trying to stop the coronavirus. With the restrictions ending, Hubei’s provincial capital begins another experiment: resuming business and ordinary life while preventing more illnesses.

The city’s 11 million residents are now permitted to leave without special authorization as long as a mandatory smartphone application powered by a mix of data-tracking and government surveillance shows they are healthy and have not been in recent contact with anyone confirmed to have the virus.

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The occasion was marked with a light show on either side of the broad Yangtze River, with skyscrapers and bridges radiating animated images of health workers aiding patients, along with one displaying the words “heroic city,” a title bestowed on Wuhan by president and Communist Party leader Xi Jinping. Along the embankments and bridges, citizens waved flags, chanted “Wuhan, let’s go!” and sang a capella renditions of China’s national anthem.

Read more: AP