Already before the vote, more than 200,000 people were estimated to have gathered outside the parliament building.
When it became clear that 204 members had voted for and 85 against, the cheering also erupted.
I'm so happy that I can't put it into words. If it hadn't happened today, I would have planned to come back every week. It feels meaningful to be present at such a historic moment, says 31-year-old Yeo So-Yeon.
The celebration took place to a mix of Christmas carols and South Korean pop music, including "Into the New World", a K-pop song that has become something of an official protest song in connection with the demonstrations against the sitting president.
When the news came, everyone started crying, including myself. We are the true owners of this country, says another demonstrant, Seong Jeong-Lim.
To facilitate for the demonstrators, tents had been set up where children could play and parents could change diapers for small children.
I want to give them a better future, just like all parents want, says Kim Ji-Woo, mother of twins.