叶公好龙：professed love of what one really fears

东施效颦：crude imitation with ludicrous effect

南柯一梦：a fond dream or illusory joy / fond dream

四面楚歌：to be besieged on all sides

悬梁刺股：to be extremely hard-working in one's study

初出茅庐：at the beginning of one's career

罄竹难书：(of crimes)too numerous to mention

失之东隅，收之桑榆：What one loses on the swings, one gets back on the roundabouts

塞翁失马，焉知非福？：A loss may turn out to be a gain

庆父不除，鲁难未已：There will always be trouble until the trouble-maker is removed