兴兵动众

Explanation: Old refers to the large-scale troops. Is more than that spent a lot of manpower to do something. With launching a campaign. " Thesaurus:  Trifles, move troops about and stir up the people— drag in many people to do sth., convet a little and lose a lot; seek small gains but incur big losses, build largely, Bellicose Poor soldiers, adopt a warlike policy, chichi, Venereology material for mobilization, reject what is near at hand and seek what is far away, Dwelling services far, qiongdu