"Fengshen Bang" (封神榜) is a Chinese novel by Liang Yusheng that was adapted into a television series in the 1990s. It tells the story of the spread of Buddhism in ancient China and the battles between various deities and demons. In the story, there are three princes who are known as the "San Taizi" (三太子), or the "Three Crown Princes," who are the sons of the Jade Emperor and are tasked with helping to defeat demons and spread the teachings of Buddhism.

In the story, the "Fuhu Qiang" (火焰枪) is a powerful weapon that is wielded by one of the main characters, Nezha. It is a spear-like weapon that is capable of shooting flames and is said to be able to defeat even the most powerful demons.

If you have obtained the head and shaft of the Fuhu Qiang in the game based on the "Fengshen Bang" story, you should be able to combine them to create the complete weapon. However, without more information about the specific game you are playing, it is difficult for me to give specific instructions on how to do this.