A kid shows a "pumpkin head" during the Pumpkin Festival celebration held at Kidspace Children's Museum in Los Angeles, the United States, Oct. 28, 2018. (Xinhua/Li Ying)

A kid attends the activities of Pumpkin Festival celebration held at Kidspace Children's Museum in Los Angeles, the United States, Oct. 28, 2018. (Xinhua/Li Ying)

A girl makes a "pumpkin head" during the Pumpkin Festival celebration held at Kidspace Children's Museum in Los Angeles, the United States, Oct. 28, 2018. (Xinhua/Li Ying)

A kid makes a "pumpkin face" during the Pumpkin Festival celebration held at Kidspace Children's Museum in Los Angeles, the United States, Oct. 28, 2018. (Xinhua/Li Ying)

A kid attends the activities of Pumpkin Festival celebration held at Kidspace Children's Museum in Los Angeles, the United States, Oct. 28, 2018. (Xinhua/Li Ying)