1 the first 1 episode:1at the turn of summer and autumn in 942, War of Resistance against Japanese Aggression was in a state of anxiety. On the outskirts not far from Cishui County, a group of Japanese pretended to be the Eighth Route Army and ran amok in the street. This incident attracted the attention of Yang Quanru, head of the Eighth Route Army Independent Regiment in Cishui County, and Cai, political commissar. Knowing through intelligence that it was the Japanese army, the chief ordered the whole army to prepare for war, stopped the Japanese army, and decided to use a batch of newly manufactured weapons that could not be shipped out of Cishui secret arsenal without authorization. In Chongqing Central University, the eccentric female psychology teacher has been in a coma for several days, which has attracted the attention of his colleague Mr. Wang. Hai Yin's fiance, Kong Fang, is a math professor and a genius in mathematical logic. On the radio, there was a message from Confucius' hometown, Xishui County. The newly developed weapons of the Eighth Route Army fought against the Japanese army 136 Brigade. Kong Fang expressed dissatisfaction with the news. He thought that the location of the arsenal could be determined through this news. What really worries Kong Fang is Major General Hiroshi Yokoo of the Japanese 136 Brigade. He knew that this man was familiar with the art of war and was an expert on China. Kong Fang thinks that Hiroshi Yokoo can infer the location of the sending factory.

2. The second episode: Confucius gave a math lesson to the students, and no one was interested in learning it. They all said that they would join the war of resistance in their own way. Confucius told everyone that mathematics and logic can help them realize their ambitions and persuaded students with several inferences. Hai Yin came to the hospital and asked the doctor to prescribe more medicine for her, but the doctor refused.

3. Episode 3: In Cishui County, Heng Weikuan was attracted by the big characters on the doorplate of Kong Ji Grain Store. He wanted to know the owner, and he was Kong Liangfeng, the father of Kong Fang. At this time, Kong Liangfeng was dealing with Japanese soldiers patrolling the street, and the situation was very dangerous. The arrival of Heng Weikuan resolved a crisis. As Kong Fang expected, Hiroshi Yokotani is collecting maps of Taihang area and organizing surveying and mapping teams to intervene, aiming at Hutoushan Arsenal. In the Hutoushan Arsenal, the spy company commander Kong Yuan is taking his brothers to drink and eat fish. Because of their long stay in Hutou Mountain, both brothers were wary. Instructor Luo Youren criticized Kong Yuan, but he was indifferent.