On a small urban road in H City, a young man walked slowly with headphones and a computer laptop bag in his hand, humming a song.His name is Zhang San, 24 years old, he is a native of H City and a fresh graduate of H University. After graduating from university, Zhang San did not look for a job, but was preparing for the national civil service exam. Because his father Zhang Erhe was a state cadre, he was also required to pass the national civil service exam.It is around 5:30 pm now, and it is also the time when Zhang San studied in the library for a day to prepare for dinner.