Why was Wu Zetian neglected by Li Shimin for 12 years when she first entered the palace

For those who are very interested in Wu Zetian, the History Encyclopedia editor brings detailed articles for your reference.
Why was Wu Zetian ignored in the end when she won the favor of Li Shimin on her debut? Something scared him away. She entered the palace at the age of 14 and was neglected by the emperor for 12 years, resulting in the crown prince taking advantage of her.
Empress Wu Zetian once experienced an unfortunate marriage when she was abandoned by Emperor Taizong of Tang, Li Shimin. Wu Zetian was the second daughter of Wu, a founding hero of the Tang Dynasty and the military governor of Jingzhou, and her concubine Yang. After the death of the samurai, Yang’s mother and daughter were bullied by their eldest son and had no choice but to move to Chang’an to live.
When Wu Zetian was fourteen years old, Emperor Taizong of Tang, Li Shimin, heard that Wu Zetian “tolerated beauty” and summoned her to the palace. The young and beautiful Wu Zetian immediately won the favor of Li Shimin. After a one night romance, Li Shimin was moved by Wu Zetian’s various seductive gestures, so he specially named her “Wu Mei” and was soon awarded the title of fifth grade talent.
It is rare in Emperor Taizong’s palace to receive such favor as soon as one enters the palace. According to common sense, Wu Zetian’s debut moved Li Shimin, and she should have enjoyed the emperor’s favor of rain and dew frequently since then. However, the fact is that once Li Shimin’s fresh energy passed, Wu Zetian was left behind by him, and this neglect lasted for twelve years. As a result, Crown Prince Li Zhi found a big bargain.
Why is Li Shimin’s attitude towards Wu Mei so hot and then cold? Originally, it was something that Wu Zetian had done that made Li Shimin start to look at her differently, thinking that this woman was too dangerous, so he was afraid and stopped being close to her.
What did Wu Zetian do to make Li Shimin so fearful? Li Shimin has a BMW named Lion Cong, which is fat and stubborn, and no one in the palace can tame it. Wu Zetian, who had just entered the palace, was fearless and told Li Shimin that she could subdue the Lion Cong. Li Shimin was skeptical and asked her if she had any tricks?
Wu Zetian said, “It’s easy to subdue the Lion Cong, but you need three things: an iron whip, an iron rod, and a dagger. Use the iron whip to beat it, if you don’t agree, use the iron rod to strike its head, and if you don’t agree, use the dagger to cut its throat.” After hearing this, Li Shimin praised Wu Zetian’s ambition on the surface, but deep down, he developed a strong resistance and fear towards the woman beside him.
After the Lion Cong incident, Li Shimin began to distance himself from Wu Zetian, to the point of completely forgetting her until he passed away. He did not provide warmth or promotion to Wu Zetian and remained an unknown talent in the palace for twelve years.
How can we not be fortunate when we lose our horses? During the period when Li Shimin was seriously ill, Wu Zetian and Crown Prince Li Zhi began to establish a relationship, thus embarking on her journey to become the queen.
If Li Shimin had never abandoned her and loved her forever, allowing her to give birth to a son and a daughter for Li Shimin, Wu Zetian’s path to remarriage would have been blocked, and her dream of becoming an empress would have been suffocated by Tang Taizong’s love. Unfortunately, there is no such thing as a ‘if’ in history, which is why she became the only female emperor in Chinese history.