"about math, research papers, science"

"black and white pumpkin"

"金字塔上有一只眼睛"

"Mermaid with a glowing pearl"

"Mermaid with a magical harp"

"Pirate with a treasure chest"

"Mythical phoenix in the night sky"

"Sorceress with a crystal ball"

"Alien with big eyes"

"Time machine with gears"

"Astronaut planting a flag"

"Astronaut on the moon"