suffering, sorrow... etc

Life lies in zheteng.

frustrating

struggle I think

Check this out , it's even hard for very professinal translators: 胡锦涛总书记"不折腾"难倒外媒 被译作翻来倒去 http://www.ce.cn/culture/anecdote/200901/04/t20090104_17859946.shtml