Child actress Kim Yoo Jung released another music video version of her digital single, "We're Happy". The cute song was also changed to a more upbeat version with addictive clapping beats that make it easier to move to in this new dance version music video.

A flash mob gathers and begins to dance in unison to the sweet song, bringing smiles to the faces of the people crowding around to enjoy the performance!

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Meanwhile, the song is a project with the Korea Volunteer Center�composed�to spread awareness about the importance of volunteering. You'll be smiling as well at the enthusiasm above! Check out the video.