兴 xing1 興
师 shi1 師
动 dong4 動
众 zhong4 眾
  1. to muster large forces
  2. to get a great number of people involved (in carrying out some task)

Examples

接连不断地买参考书，兴师动众地请家教，搞得孩子一点空余的个时间也没有。

Info