Season 4 opens with the clan in frantic preparation for Chinese New Year, circa 1975, so you'll find the youngsters still safely clad in those oversized shirt-collars and campy bell-bottoms. But Vicky has plans to stay ahead of the times by redecorating the family home, and decides to toss out the long-cherished sewing machine that belonged to her late mother - much to Dad's chagrin.