An idiom of a year

The idiom of the year 2002 is 이합집산.

In characters (hanja): 離合集散

離 - to separate
合 - to cooperate
集 - to collect
散 - to scatter, strew

So, the meaning of the idiom is 헤어졌다가 모였다가 하는 일  or meeting and parting TT.TT