Social networks are flooded with photos of Ukrainian soldiers raising flags in "newly liberated territories" and images of abandoned or destroyed Russian positions.
The Ukrainian army claims to have regained control of 3.000 square kilometers of territory after a swift counter-offensive in eastern Ukraine.
If it is confirmed, it means that Ukrainian forces have regained three times more territory than before.
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The BBC cannot confirm the numbers released by Ukrainian officials, as journalists are denied access to the front.
But the Russian Ministry of Defense confirmed the withdrawal of its forces, due to "regrouping".
These are some of the photos depicting the Ukrainian counter-offensive.
Ukrainian forces claim to have entered Kupyansk and Izhyum - two strategically important cities previously held by the Russians.
Russia's defense ministry confirmed that its forces had withdrawn from the two cities, saying it would allow them to "regroup" in territories controlled by Moscow-backed separatists.
The ministry also confirmed the withdrawal from the third key city, Balaklija.
The Ukrainian military claims that soldiers found and seized an abandoned Russian armored vehicle during a counteroffensive.
Ukrainian President Volodymyr Zelensky announced that around 30 towns and villages were liberated in the Kharkiv region.
Reuters has obtained a video that shows Ukrainian soldiers in Balaklia, Kharkiv region, ripping a Russian poster from a billboard, revealing a poem by Taras Shevchenko underneath.
For many Ukrainians, Shevchenko is not only a poet and a political figure, but a symbol of the country's independence.
BBC journalist Orla Guerin spoke with 50-year-old farmer Natalia from the village of Novovozensenske, in the southern region of Kherson.
Natalija said that freedom came to her village on September 2, when Ukrainian forces arrived.
"I didn't know what to do - should I hug them or hold their hands? I touched them and I was very happy," she said.
Ukrainian soldiers pose for a photo in the settlement of Vasilenkove in the Kharkiv region.
The picture was published by the media department of the Territorial Defense of the Ukrainian Army.
They state that the photo was taken after the settlement was liberated from Russian forces on September 10.
People pose in front of statues of Ukrainian poet Taras Shevchenko with a Ukrainian flag, as the Ukrainian army announced it had liberated the town of Balaklia, in southeastern Kharkiv region, on Saturday.
Ukrainian President Volodymyr Zelensky hailed the progress of Ukrainian forces in northeastern Kharkiv province as a potential turning point in the six-month war.
But Russian forces still hold about a fifth of Ukraine's territory.
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