In the context of the Anti-Japanese War in the Republic of China - Tian Yujiang is a doctor with superb skills and a member of the Communist Party of China. He specializes in secretly treating the Communist Party and helping the Communist Party avoid the pursuit of the Japanese army.
One day, Tian Yujiang was treating injured people on the street, and saw a thin little boy in a corner. According to the survivors, his parents were both Communists, but they were beaten to death by the Japanese army in front of him, so his parents died in the line of duty. Moreover, he has no relatives and is helpless. When Tian Yujiang heard about it, he adopted the little boy and named him "Lin Sui Lake", which means peace every year and that he can never dry up like lake water... (No spoilers later)
Mission: Remember the history and never forget the original intention