通告

通告	tōng gào	to announce; to give notice / announcement
通	tōng	to go through / to know well / (suffix) expert / to connect / to communicate / open / to clear / classifier for letters, telegrams, phone calls etc
通	tòng	classifier for an activity, taken in its entirety (tirade of abuse, stint of music playing, bout of drinking etc)
告	gào	(bound form) to say; to tell / to announce; to report / to denounce / to file a lawsuit; to sue