How did Li Yuanba die in the history books?

There is a saying that he was killed by lightning, and there is also a saying that he was killed by falling horses. Then how did he die?

The character Li Yuanba first appeared in The Legend of the Tang Dynasty, a novel of the Qing Dynasty, which was established from the end of the Southern and Northern Dynasties to the Tang Dynasty. Li Yuanba is based on Li Xuanba, the third son of Tang Gaozu. At that time, Emperor Kangxi called Michelle Ye, so people changed the word Michelle Ye to Zi Yuan to avoid taboo.

In the novel, Li Yuanba is an invincible general, who helped his father Li Yuan to establish many achievements, was appreciated and rewarded by Yang Di, and greatly praised Li Yuanba, which made Yuwen Chengdou, who is known as the best in the world, very dissatisfied. Li Yuanba hoped to compete with Yu Wencheng, and Li Yuanba killed Yu Wencheng in the duel. When it thundered on the way back, Li Yuanba cursed the sky and threw a hammer at it, only to be struck by lightning.

Many fans here lamented, but according to the records in Old Tang Book and New Tang Book, Li Xuanba, the third son of Li Yuan, died in an accident at the age of 16. Both the New Book of Tang Dynasty and the Old Book of Tang Dynasty belong to the official history, so their credibility is greater than that of The Legend of Tang Dynasty. From the perspective of official history, Li Yuanba in the novel is basically a non-existent figure, so we don't need to feel sorry for it. After all, it's not true.

But there is another saying that Li Yuanba is a combination of Luo Shixin, a famous Tang Dynasty. The characteristics of this general are very consistent with the image of Li Yuanba in the novel-short stature, strong strength, simple mind and low intelligence. From the perspective of official history, the credibility of Li Yuanba in the novel is not high.