兴师动众（興師動衆）　

◎ 兴师动众 xīngshī-dòngzhòng

[move troops about and stir up the people—drag in many people to do sth.] 兴:发动。原指发兵出征。后泛指发动许多人

夫发号布令,而人乐闻;兴师动众,而人乐战;交兵接刃,而人乐死。——《吴子·励士》