Li Sijian
Li Sijian , probably né Tuoba Sijian, was an ethnically-Dangxiang warlord in the latter years of the Chinese Tang dynasty and Tang's successor state Later Liang of the Five Dynasties and [Ten Kingdoms period], who controlled Dingnan Circuit as its military governor in de facto independence.
During Tang dynasty
It is not known when Li Sijian—likely known as Tuoba Sijian at his birth—was born. His family was of Dangxiang stock, of the Pingxia branch. His older brother Tuoba Sigong became a warlord during the reign of Emperor Xizong of Tang and, for his role in aiding the Tang dynasty imperial government against the major agrarian rebel Huang Chao's state of Qi, was given the title of military governor of Dingnan Circuit, and was also given the imperial clan surname of Li. Li Sijian would have taken the surname of Li at the same time as well.Li Sigong died around 886. Li Sijian succeeded him as military governor of Dingnan, while another brother, Li Sixiao, was given Baoda Circuit.
In 895, when Emperor Xizong's brother and successor Emperor Zhaozong fled the capital Chang'an into the Qinling Mountains to the south of Chang'an in fear of the warlords Li Maozhen the military governor of Fengxiang Circuit and Wang Xingyu the military governor of Jingnan Circuit, the major warlord Li Keyong the military governor of Hedong Circuit arrived in the region to aid the emperor. In response, Emperor Zhaozong commissioned him to command the operations against Wang, and also commissioned Li Sijian and Li Sixiao, as well as Zhang Fan, to aid Li Keyong in the operations.
In 896, with Li Maozhen again threatening Chang'an, Emperor Zhaozong fled Chang'an again, to Han's Kuangguo Circuit. While there, Emperor Zhaozong commissioned the chancellor as the overall commander of the campaign against Li Maozhen, and commissioned Li Sijian as the deputy commander, as well as the military governor of Jingnan. However, the campaign was not actually launched, as Li Maozhen claimed that he was apologizing, and Han, who was a long-term ally of Li Maozhen, also dissuaded the actual launching of the campaign. When the campaign was formally cancelled in 897, Li Sijian was made the military governor of Ningsai Circuit.