Russian army has completely controlled Avdeyevka, an important town in the Donetsk region. Putin congratulated the Russian army on its "major victory".

What signal does it send to the outside world? What other key battles on the Russian-Ukrainian frontline are worthy of note? China News Network specially invited Zhang Hong, a researcher at the Russian, Eastern European and Central Asian Institute of the Chinese Academy of Social Sciences, to provide an in-depth interpretation of the situation in Ukraine.