送旧迎新（送舊迎新）　

◎ 送旧迎新 sòngjiù-yíngxīn

[see off the old and welcome the new; ring out the Old Year and ring in the New] 谓送走旧的,迎接新的

送旧迎新也辛苦,一番辛苦两年闲。——宋· 杨万里《宿城外张氏庄早起入城》