C2023 Unusual Imprint

Just after she left, a figure flashed into the bathroom. It was a cleaner. She carried a bucket of water into the bathroom, went straight to the trash can, and took out a paper bag.

Opening the paper bag, there was a book inside, "Painting Book". He held the book and shook it, and a card fell out. On the card was written:

"Password 020454"

"Twenty thousand!"

"Hehe