town crier
Historical occupation in Japan, especially during the Edo period, who walked through streets announcing events, sales, or public notices while calling out 'tōzai' (east-west) to gather attention.
In the Edo period, town criers walked around town conveying announcements.
From 東西 (tōzai, 'east-west'), a call used to attract attention, and 屋 (ya, 'shop' or 'person'), referring to the person who makes such calls.