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Children visit the annual Tulip Time Festival in the city of Holland, Michigan state, the United States, on May 12, 2019. The festival was held from May 4 to May 12. (Xinhua/Wang Ping)
Children visit the annual Tulip Time Festival in the city of Holland, Michigan state, the United States, on May 12, 2019. The festival was held from May 4 to May 12. (Xinhua/Wang Ping)