In the early spring of 1949, Huang Yiqiu, an old underground party member, was reborn. Although the ancient capital of Nanjing was liberated, he carried the [5-second early warning system] to postpone his wedding and perform his last latent mission. He pretended to be stupid all day long, wore a mask of disguise, endured misunderstandings and questions from relatives and friends, and finally wiped out the enemy agents and ushered in the founding of New China...