Wu Zetian, the only female emperor in Chinese history, reigned during the period known as "Zhou". However, the fates of her four sons were filled with tragedy. The eldest son, Li Hong, was poisoned to death, the second son, Li Xian, committed suicide, the third son, Li Xian, died suddenly, and the youngest son, Li Dan, passed away due to illness. These tragic events not only reflect the cruelty of palace intrigues but also reveal the distortion of power on human nature.

Firstly, Li Hong, the eldest son of Wu Zetian and Emperor Gaozong Li Zhi, was named Crown Prince after his father's death. However, his life ended abruptly in the hands of his mother, Wu Zetian. According to historical records, he was poisoned because his political beliefs did not align with his mother's. This incident shocked the entire imperial court and exposed the brutality of palace intrigues.

Secondly, Li Xian, the second son of Wu Zetian and Emperor Gaozong, succeeded his elder brother as Crown Prince. However, his fate was even more tragic. He was forced to commit suicide during a palace coup. This incident once again shocked the entire imperial court and revealed the ruthlessness of power struggles.

Thirdly, Li Xian, the third son of Wu Zetian and Emperor Gaozong, became Crown Prince after the death of his brother Li Xian. However, his life was cut short by a sudden death. This incident highlighted the unpredictability of fate and the fragility of life.

Lastly, Li Dan, the youngest son of Wu Zetian and Emperor Gaozong, succeeded his brother Li Xian as Crown Prince. Nevertheless, he succumbed to illness and passed away. This incident underscored the unpredictability of life and the mercilessness of disease.

Overall, the fates of Wu Zetian's four sons were tragic. Their lives were sacrificed in their mother's power struggles. These events not only reflect the cruelty of palace intrigues but also expose the distortion of power on human nature.

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