Senses
送故迎新 to bid farewell to the old and welcome the new
To bid farewell to those departing, especially officials, and greet the arrival of newcomers
送故迎新 to ring out the old year and ring in the new
To send off the old year and usher in the new year
送故迎新 life of a prostitute
Metaphor for the life of a prostitute who constantly sees off old clients and welcomes new ones