Jiang Che, a 21st century security guard, traveled to 1965 and became the orphan of a martyr in the Nanluoguxiang Siheyuan. His father, Jiang Dahai, died in the security department of the steel rolling mill. He was forced to drop out of school at the age of fifteen to take up a post. He clutched the uniform to earn a living for himself in the courtyard.