Four primary happiness:
Raining after long drought; Meeting an old friend in other township; Newly wed's first night ; Win the imperial examination.
人生四大喜： 久旱逢甘雨，他乡遇故知，洞房花烛夜，金榜题名时。
Four extreme devastation:
Lost parents in childhood; Lost spouse in middle age; Lost the only son in senior; No good mentor for the young son.
人生四大悲：少年丧父母，中年丧配偶，老年丧独子，少子无良师。
Four tremendous pain:
1, Too stubborn in something; 2, Being reluctant to give something out; 3, Can't afford to lose; 4, Can't let go something/someone.
人生四大苦：一苦看不透，二苦舍不得，三苦输不起，四苦放不下。