Tucked away in a corner room in Halsey Hall, a small group of students is busy rehearsing through the afternoon. Not an unusual sight for the building, which plays host to many dance rehearsals, but it seems doubtful anyone else in the building would practice a shadow dance and plan the details of a lion dance. It's also fairly safe to assume the five students are the only ones dancing to Vietnamese pop music, complete with Vietnamese lyrics. The students are members of the Vietnamese Student Association, and they are preparing for the Lunar New Year — Tet, the New Year's holiday based on the Lunar Calendar. The holiday will be observed Friday.