The slogan "After three months of war, a letter from home is worth a ton of gold" is "City of Fire". According to relevant public information, after three months of war and a letter from home worth a ton of gold, they are all slogans of "burning the city together". This slogan comes from the anti-Japanese war poem "Fire Together", which expresses the determination and belief of the people's army and people to fight against foreign invasion regardless of difficulties and hardships during their stay in War of Resistance against Japanese Aggression.