报晓

报晓	bào xiǎo	to herald the break of day
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
晓	xiǎo	dawn / daybreak / to know / to let sb know / to make explicit