People visit the Sweets and Snacks Expo in Chicago, the United States, on May 23, 2023. The 2023 Sweets and Snacks Expo is held at McCormick Place in Chicago from May 22 to May 25. (Photo by Vincent D. Johnson/Xinhua)

People visit the Sweets and Snacks Expo in Chicago, the United States, on May 23, 2023. The 2023 Sweets and Snacks Expo is held at McCormick Place in Chicago from May 22 to May 25. (Photo by Vincent D. Johnson/Xinhua)

An attendee talks with exhibitors at a booth at the Sweets and Snacks Expo in Chicago, the United States, on May 23, 2023. The 2023 Sweets and Snacks Expo is held at McCormick Place in Chicago from May 22 to May 25. (Photo by Vincent D. Johnson/Xinhua)

Lollipops are seen at the Sweets and Snacks Expo in Chicago, the United States, on May 23, 2023. The 2023 Sweets and Snacks Expo is held at McCormick Place in Chicago from May 22 to May 25. (Photo by Vincent D. Johnson/Xinhua)