Both Yang Guang and Li Yuan were born into the Military Nobility of Guanlong, and their mother was a sister, and he was Li Yuan's aunt's cousin.
As a legitimate relative of the emperor, Li Yuan was not reused after Yang Guang ascended the throne, and he was not prominent in the official field. It was not until the ninth year of Daye (613) that Yang Xuangan to rebel against the Sui, and Li Yuan was ordered by Yang Guang to guard Honghua Commandery (弘化郡, in modern Qingyang, Gansu) and command the Guanyou military.
That is to say, Li Yuan is almost 50 years old before he began to take charge of the party, which can also be regarded as a big instrument. During his stay in Honghua County, he was tolerant and benevolent to his subordinates, and many people were attached to him.
At that time, there was a proverb in the government and the public that "Li Shi should be the son of heaven", and Yang Guang felt that this cousin looked strange and was very suspicious of him.
Seeing that Li Yuan had befriended Haojie, Yang Guang was even more uneasy, so he ordered him to go to the parade. It just so happened that Li Yuan was ill and did not go to the call to see him.
Li Yuan's nephew, Queen Shi, was Yang Guang's concubine. Yang Guang asked Wang, "Why is your uncle late?" Wang replied that he was ill.
Will Yang Guang believe it? Of course, he didn't believe it, so he asked, "Is it going to die?" A gloomy sentence, this is wishing that Li Yuan died early.
When Li Yuan knew about this, he was definitely afraid. At this time, he was not yet able to fight with Yang Guang, so he disguised himself by drinking and accepting bribes, and properly Raised Taoguang.
After two years, Li Yuan was transferred to Hedong, Shanxi, and quelled many rebellions. In order to curry favor with Yang Jian, Li Yuan repeatedly offered eagle dogs and was promoted to the rank of General of the Right Guard.
In the thirteenth year of Daye (617), Li Yuan officially served as the retainer of Taiyuan and the superintendent of Jinyang Palace, becoming the highest military and political governor in the region. At the same time, Yang Guang appointed his confidants Wang Wei and Gao Junya as deputy guards, and installed two eyeliners to monitor Li Yuan.
Taiyuan was a major military town, with the heavy responsibility of defending against the Turks, with sufficient food and food, and a large number of soldiers. At this time, the world was in chaos, and Li Yuan also began to plot against Sui.
When Wang Wei and Gao Junya saw That Li Yuan recruiting troops and buying horses, they suspected that he was going to rebel, so they plotted to get rid of Li Yuan's father and son, and asked the Sui Emperor for merit.
When Li Yuan learned of their plot, he preemptively pulled out the two nails, paving the way for the imminent erection of the anti-Sui banner.
Yang Guang was a tyrant but not a tyrant, and he saw that Li Yuan was accurate and took precautions. However, by all calculations, it was not calculated that the two henchmen he sent were inferior to others, and they were eventually used by Li Yuan to sacrifice the flag.
