Strange Illness

Words could not describe how tired Liu Guolin was after attending to 100 cases in one afternoon. After a quick shower, he landed on his bed and drifted off to sleep. His phone was set to vibrate. He had a nurse girlfriend who worked at the same hospital so neither of them had the time to celebrate Valentine's. Liu Guolin slumbered until incessant knocking came on his bedroom door. The person outside it shouted loudly, "Ol' Liu! Ol' Liu!"