During the Republic of China period, China was poor and weak and the warlords were divided, and after the fall of Yuan Shikai, the warlords in various places were even more direct factions of swords and soldiers, and you sang and I appeared, of which these seven factions were the most powerful. Even in the place directly with one hand to cover the sky.
Image source network
Feng: The Feng Army is located in the northeast, also known as the Northeast Army, led by Zhang Zuolin, although it is located outside the Guan, but it has entered the Guannei several times. He fought with Cao Kun's immediate family many times and suffered mutual damage. Moreover, the northeast originally belonged to a rich land, and its financial resources did not lose to any faction. Direct lineage: The most popular leader of the direct warlords was Feng Guozhang, who was succeeded by Cao Kun and Wu Peifu after his death, and his power was perennially entrenched in Hebei and other places, closer to the power center of Beiping at that time than other warlords. Feng Guozhang and Cao Kun have acted as The President of the Republic of China and vice president respectively.

Anhui system: Anhui warlords have been entrenched in Anhui and other places for many years, in fact, among all the Beiyang warlords, the Anhui warlords are the biggest ups and downs, once with the name of Beiyang orthodoxy for a while, but the decline is also very fast, straight Anhui a war, the Anhui system was completely defeated, there is no possibility of any reversal, and finally disappeared.
Dian: Tang Jiyao of the Dian dynasty. Originally followed Cai Yi, until the death of General Cai Yi, Tang Jiyao took over Yunnan and other places, after taking over Tang Jiyao vigorously developed military strength, and eventually dominated one side, but the Yunnan clan has not been very united, in 1927, the internal problems of the Anhui clan finally broke out, and the major warlords of the Anhui clan gradually began to part ways.
Gui: Lu Rongting is still a little skilled, saying that in fact, the underworld origin is not exaggerated at all, and Zhang Zuolin has quite similarities, and there are people like Li Zongren who support each other on the side, until the gui clan disbanded and joined the Kuomintang, he did not make a big mistake. Entrenched in Liangguang and other places, the power does not have to be small at all by other warlords.
Shanxi Army: Although the Shanxi Army did not call itself the Jin Dynasty, but Shanxi was entrenched in Shanxi, and originally Yan Xishan was a warlord who could not be good to anyone, but his ability was indeed there, from the standard unification road to even Chiang Kai-shek to be a figure who could not be underestimated, and it had a great relationship with his personality that could be carefully calculated, and he was particularly fond of seeing the wind and making the rudder go to the source.
Northwest Army: Is the most complex and chaotic army, the sphere of influence spread throughout Shaanxi, Gansu and Ningxia and other places, as the leader of Feng Yuxiang's reputation is indeed not bad, warlords everywhere laughed that he was a defecting general, but often defected to one faction to survive, but Feng Yuxiang can exchange for soldiers and horses for money and food every time he defects, so his power is also getting bigger and bigger. However, as I said just now, the internal structure of the Northwest Army is very complicated, so complex that even some generals nominally belong to Feng Yuxiang, but internally they are not willing to listen to Feng Yuxiang's dispatches, including many patriotic generals such as Zhang Zi who are loyal to Yang Hucheng.
Reference: "The Past of the Republic of China, the Great War of the Central Plains"