1, Early Period: From 1932 to 1933, Robert erhard wrote Conan's early stories, including Phoenix on the Sword, Tower of Elephants, Black Giant, Gangster in the Royal Family and Queen on the Black Coast. These stories tell the adventures of Conan as a teenager, from slaves to powerful soldiers.

2. Mid-term: From 1933 to 1936, Howard wrote Conan's mid-term stories, including The Devil in the Black Swamp, The Golden Lion, The Gate of Darkness, devil valley, The Fountain of Hell and so on. These stories tell the adventures of Conan as an adult, fighting against all kinds of evil forces and protecting the innocent.

3. Later period: From 1936 to 1939, Howard wrote Conan's later stories, including The Red Dagger, The Black God, The Devil on the Throne, The Snake Treasure, and The City of Gold. These stories tell all kinds of strange and dangerous experiences Conan encountered in his adventures.