Why did Li Shiming behead Li Junxian just because of his birth name?

Li Junxian was the founding star of the Tang Dynasty and made great contributions to the establishment of the Tang Dynasty. He is from Henan. Li Junxian was originally under the command of Shimei. Later, because he didn't like Shi Mi, he turned to Li Shimin's account, followed Li Shimin's expedition to the north, and after Li Shimin ascended the throne, he was named a corps commander, which won Li Shimin's trust. But this famous historical figure was later killed by Li Shimin because of his birth name.

This is because in 648 AD, the then Taishiling was in charge of divination, and divination produced such a result: the three generations of the Tang Dynasty perished, the female celebrities flourished, and the white stars rose and the purple stars fell. At this time, Li Shimin was shocked after hearing this speculation, and Li Shimin stayed up all night. He had to try his best to get rid of this potential threat.

At this time, Li Shimin came up with a way to hold a group banquet. During the dinner, all the ministers played a little game. Everyone said his nickname, and it was Li Junxian's turn. Li Junxian said his nickname was "Mrs. Five".

At that time, Li Shimin a quiver in my heart. Li Shimin suddenly felt that Li Junxian might be the one who wanted to rebel. Li Junxian, nicknamed Wuniangzi, was alone in Wu 'an County, and Li Junxian swam quite a few troops. Isn't this a series of situations exactly what Tai Bailing said at that time?

Subsequently, Li Junxian was demoted, and then Li Shimin ordered the Li Junxian family to be beheaded before he died. I have to say that this is a very tragic historical event, because Li Junxian's nickname at that time was Wuniangzi, and he was killed, which also reflected from the side that the literary inquisition was very popular at that time and the imperial power system reached its peak.