One day, all of our family members and relatives got together, and in memory of this event, we decided to have our photos taken. For my grandparents, who were not good at using computers, I tried to print out the photos immediately with an ink jet printer. However, I noticed that the color ink was out of stock. At that time, one of my nephews bumped into a nearby shelf, accidentally dropped and knocked over a box that was on a shelf. Among scattered items on the floor, we found an ink cartridge for the color printer. I could not believe it. I never imagined that an ink cartridge was hidden in a box on the shelf. It was almost as if somebody was telling us that the cartridge was there.