Chen Xuanba, who chose the secret, fought for a day and a night with Zhou Dufu, the first master in the world and the sworn brother of his brother Taizong, and finally died. Du Fu Zhou also praised him greatly. But many people think that this is his brother Emperor Taizong (the prototype should be Li Shimin's conspiracy, because Zhoudufu is his sworn brother, and Chen Xuanba is a series built in favor of the prince at that time)
The TV series has changed a lot, and the settings in the novel are more complicated. You can check in the study of Ye Ye, which contains a lot of novel materials.