Winter 1941, Jiangcheng.
Telecommunications apprentice Chen Jingzhe worked an all-night shift for his master in order to collect money for his sister's life-saving medicine.
Overnight, everything turned upside down.
The master fell down and died tragically. The military commander broke into the house and placed a reward of 500 yuan all over the city - if he was alive, he wanted to see the person, if he died, he wanted to see the body.
He didn't know that the unfamiliar codes he had memorized by instinct were the last fragments of the core key of our party's top-secret "Red Algorithm."
Without it, the entire algorithm is just a pile of waste paper; with it, the enemy can decipher all our secret messages, and tens of thousands of soldiers in the Central China Theater will be wiped out.
He himself is the living key that can determine the outcome of the war.
