层报

层报	céng bào	to report to higher authorities through layers of hierarchy
层	céng	to pile on top of one another / layer; stratum / floor (of a building); story / (math.) sheaf / classifier for layers
报	bào	to report; to inform; to announce / to respond; to reply / to sign up for; to register for (abbr. for 报名) / to reward; to recompense / to take revenge; to retaliate / newspaper / periodical; journal / bulletin / telegram