In medium bowl, beat butter and vanilla with electric mixer on medium speed 30 seconds. Reduce speed to low. Add powdered sugar, 1 cup at a time, beating until blended. Add 1 tablespoon of the whipping cream, the five-spice powder and salt. Beat until light and fluffy. If necessary, beat in remaining whipping cream, 1 teaspoon at a time, until frosting is smooth and spreadable.