Introduction to the complete set of "Underground and Above Ground", introduction to episodes 1-40 of "Underground and Above Ground", introduction to the complete set of "Underground and Above Ground".

On the eve of the liberation, our party's "underground" worker Liu Kehao successfully infiltrated the Shenyang branch of the Nationalist Party's Confidential Bureau. In Shenyang, Liu Kehao won the trust of Xu Yinchu, the station chief of the Shenyang branch, not only with his extraordinary personal abilities but also with his charismatic personality. Moreover, he captured the heart of Lin Jing, known as the "Beauty of the Military United Front." However, Liu Kehao was well aware of his own identity and mission, so he always evaded and skillfully avoided Lin Jing's expressions of love and pursuit.