张网to cast a net

• 撒网捕鱼

  cast a net to catch fish

• 部队刚一撒开网，敌人就进了包围圈。

  The army cast its net wide, encircling the enemy.

旧时指借婚丧寿诞等事，普请亲友以获利to invite all one's friends and relatives to a ceremony (marriage, funeral, etc.) in order to receive lots of gift money