"Happy Worship".

According to Kuwo Music query, "Da La Da La Da La Da" is the song "Happy Worship". Singer: Wilber Pan, Angela Chang, album: "Happy Worship". Lyricist: Lin Xi, composer: Turtles. Lyrics: "Please follow me, those who are in love and those who are heartbroken, dance and worship happiness at the same time, come with me whether you are happy or unhappy, don't wait for the beautiful and sacred time, da da la da la da la da."