Is “Lei Zhenzi was an adopted son of King Wen of Zhou, found on Mount Yan, and was born with wings of wind and thunder.” true?

The Investiture of the Gods describes that King Wen of Zhou, Ji Chang, while taking shelter from rain on Mount Yan on his way to Zhaoge, found a baby born after a thunderclap, adopted him as his hundredth son, named Lei Zhenzi. Later, he became a disciple of Yunzhongzi and grew wings of wind and thunder to rescue his father from the pass. The Records of the Grand Historian records that King Wen had many sons, but 'King Wen's hundred sons' is a literary exaggeration. The image of Lei Zhenzi is derived from the folk thunder god of the Tang and Song dynasties, and his character and deeds are entirely fictitious.