A worker cleans and disinfects a Doraemon figure at the "Doraemon's Time-Travelling Adventures in Singapore" exhibition held at the National Museum of Singapore on Nov. 3, 2020. The exhibition will run till Dec. 27, 2020. (Photo by Then Chih Wey/Xinhua)

A visitor takes photos of her own Doraemon figurine with one of the exhibited Doraemon figure at the "Doraemon's Time-Travelling Adventures in Singapore" exhibition held at the National Museum of Singapore on Nov. 3, 2020. The exhibition will run till Dec. 27, 2020. (Photo by Then Chih Wey/Xinhua)

People visit the "Doraemon's Time-Travelling Adventures in Singapore" exhibition held at the National Museum of Singapore on Nov. 3, 2020. The exhibition will run till Dec. 27, 2020. (Photo by Then Chih Wey/Xinhua)

A girl visits "Doraemon's Time-Travelling Adventures in Singapore" exhibition held at the National Museum of Singapore on Nov. 3, 2020. The exhibition will run till Dec. 27, 2020. (Photo by Then Chih Wey/Xinhua)

A woman poses for photos with a Doraemon figure at the "Doraemon's Time-Travelling Adventures in Singapore" exhibition held at the National Museum of Singapore on Nov. 3, 2020. The exhibition will run till Dec. 27, 2020. (Photo by Then Chih Wey/Xinhua)