杨坚在开国之初勤于政事，励精图治，使国家人丁兴旺，国库殷实，促成了“开皇之治”的局面，是历史上比较有作为的君主。隋文帝杨坚娶独孤氏，生有五个儿子：长子杨勇、次子杨广，接着是杨俊、杨秀和杨谅。581年，杨坚代周称皇帝建立隋朝后，立杨勇为太子，封杨广为晋王。 Yang Jian, the founder of the Sui Dynasty, was a diligent and wise ruler who worked hard to govern the country and promote prosperity. He established a strong foundation for his reign by appointing capable officials and implementing effective policies.
Spurred by his mother's jealousy, Emperor Yang Jian took great care to present a humble image in front of her. During one inspection visit to Yang Guang's residence, he found that it had been neglected for some time. This led him to believe that his son did not enjoy luxuries or entertainments, which might contribute to his future success as an emperor.
Meanwhile, Yang Guang secretly manipulated others into praising him while criticizing Prince Yong. As Emperor Yang Jian grew older and weaker due to illness, he began considering changing the succession plan.
Upon learning about this decision from insiders such as Li Xiurong and Yuan Yanwu (元岩), Emperor Yang Jian became furious with Prince Yong but eventually passed away without being able to change his mind.
In order to secure power before being deposed as heir apparent himself, Prince Yong moved quickly against those loyalists who opposed him while trying desperately keep control over any remaining avenues of influence within court circles.
Afterwards on January 13th in 604 AD during Renshou Year Four ,The Late Spouse Of The late Great Empire Founder The Late Empress Wenxuan (Empress Dowager Xiao) Was In Deep Grief And Mourning Over Her Son’s Death And She Made Sure That The Imperial Court Would Be Told About His Passing At Once So That They Could Prepare For A New Era Under A New Ruler
The historical records show that after Emperor Taizong died in 649 AD at age 65 years old., he was buried along with Empress Wang inside Tai Mausoleum located near Chang'an city (modern-day Xi'an). According To legend It Is Said That There Were No Treasures Buried With Him In Accordance With His Wishes But This Fact Has Been Subjected To Debate Among Historians Since Then
