The book "Living with a Flight Attendant" became popular overnight on the Internet. It tells the pure love life of Shanghai white-collar Luffy and flight attendant Ran Jing. Ran Jing, a savage and gentle stewardess, was lovelorn and drunk, and was "picked up" by Luffy, a white-collar worker, to go home. Because of Luffy's stupidity and humor, Ran Jing began to contact him. Later, I accidentally got the key to Luffy's house, and soon started an incredible "cohabitation life". Later, there was a TV series version and a movie version of the same name, "Rules First, then Love".