Russia blasted an apartment block in Ukraine with missiles on Wednesday after launching a swarm of drones at cities overnight, a deadly display of force following a solidarity visit by China’s leader Xi Jinping.

Ukraine’s President Volodymyr Zelensky tweeted security camera video of a residential apartment block in the southern city of Zaporizhzhia exploding as it was struck by a missile in broad daylight.

Reuters verified the footage and witnessed the aftermath: firefighters struggling to put out flames engulfing the wreckage.

Regional authorities said at least one person was confirmed dead and 25 wounded in the strike.

“Right now, residential areas where ordinary people and children live are being fired at,” Zelensky wrote.

“This must not become ‘just another day’ in Ukraine or anywhere else in the world. The world needs greater unity and determination to defeat Russian terror faster and protect lives.”

In Rzhyshchiv, a riverside town south of the capital, at least four people were killed and others buried under the rubble when two dormitories at a college were struck by a drone.

More than 100 workers and 28 vehicles were deployed to the scene, and the search for survivors was continuing, authorities said.

Sirens blared across the capital and swathes of northern Ukraine, and the military said it had shot down 16 of 21 Iranian-made Shahid suicide drones.

In an apparent reference to the Chinese President’s visit to the Russian capital, Zelensky tweeted: “Every time someone tries to hear the word ‘peace’ in Moscow, another order is given there for such criminal strikes.”

Hosting Xi in Moscow this week was Russian President Vladimir Putin’s grandest diplomatic gesture since he launched the war a year ago and became a pariah in the West.