The cry comes from traditional Taiwanese mobile vendors who sold shao rou zong from carts or bicycles, announcing their arrival with a long, melodic call that could be heard down the street. Shao rou zong are savory glutinous rice dumplings steamed in bamboo leaves, especially associated with home-style and festival eating. As street vending declined, recordings and imitations of the call spread online as a shared cultural memory. It is now reused in memes and edits not just for food, but to signal nostalgia, longing, and old-school Taiwan atmosphere.