What is the real history of the bloody battle of Tengxian in the Battle of Xuzhou?

Are you talking about the Chuan Legion who fought bloody battles to the end? The Chuan army is real and they have a great battle record and prestige it's just that the TV show has fictionalized some people. But these people are either based on reality or historical archetypes or shadows abbreviated The Sichuan army out of Sichuan, all walks of life is generally considered to be China's "worst army", under-equipped, lack of ammunition, supplies and medical equipment, winter in Shanxi when the war, the soldier's feet wearing straw shoes. However, it was such a troop that made countless hardest and most tragic sacrifices in the war of resistance and made great contributions to the cause of national independence of the Chinese nation. In the civil war in the infamous 20 army yang sen department, is the first in the war of resistance out of chuan resistance of chuan army, from the beginning of the war in songshu, no service is not from the three times of changsha battle of the backbone of the regiment, had in the third changsha battle of zhu ying shan battle of the Japanese army in the whole of the ninth mixed brigade katou brigade. The twenty-sixth division of the Sichuan army, participated in the battle of Songhu, is one of the five divisions with the best record, more than 4,000 officers and men of the division, to the evacuation of the battlefield when only more than six hundred people, casualties of more than 85%. Nanjing defense war, the twenty-first army defense of the southern line, which 145 division guard Guangde, in the superiority of the enemy's siege, the position was lost, the division commander Rao Guohua resolutely rate the remaining only a battalion of troops rushed into the enemy, in order to restore the position, ultimately outnumbered from, trapped in the siege, out of ammunition, the general does not want to be a captive, raised the gun and martyred himself. Guo Xunqi, commander of the 144th Division, was also seriously wounded in action. Twenty-two group 37 end of the year into Li Zongren miscellaneous army theater, to participate in the Battle of Taierzhuang, 122 division commander Wang Mingzhang, was ordered to stationed in Tengxian, the main force of the Japanese army Itagaki Zhengshilang's Fifth Division attacked the Tengxian not to bombard the city walls with heavy artillery aircraft bombardment, blowing up the Wang Division Commander personally commanded the street battle, was unfortunately machine-gun fire and died heroically. After the martyrdom of Wang Division Commander, the officers and men of the Department of resistance, fighting to the last person, the wounded soldiers in the city do not want to be prisoners, with grenades and the enemy rushed in to die with the enemy. Tengxian battle, 122nd Division more than 5,000 people almost all casualties. Chen Li's division of the 121st Division, which was defending the Jiehe and Longshan areas north of Tengxian, also suffered 4,000 to 5,000 casualties. The 122nd Division of the Sichuan Army, under the leadership of Wang Mingzhang, lost its entire force in Tengxian. The last three hundred seriously wounded in the city, after the Japanese army broke through the city, those who could act rushed out to fight with them and were martyred, and the rest of the wounded who were no longer able to act pulled the remaining two boxes of hand grenades with a smile on their faces and martyred themselves in the city. In this battle, the Sichuan army generals did not appear in a captive, for the Sichuan army won the respect of the country. It is the great sacrifice of the Sichuan army in exchange for the victory of the battle of Taierzhuang, Li Zongren had waved tears that: "the Sichuan army to the few against the many, at the expense of major sacrifices, blocking the enemy southward, complete the combat mission, written into the history of the Sichuan army the most glorious one." Li Jiayu Department of the 47th Army, a long time in Southeast Jin, later organized into the 36th Group Army, stationed in Henan, in the Battle of Yuzhong, by the Kuomintang upper command is ineffective, the western Yuzhong ministries in the chaos of the transfer, the 36th Group Army because of a miscellaneous, ordered to serve as a cover, in the transfer of the way, the Command direct team unfortunately encountered with the Japanese penetration detachment, Commander-in-Chief Li Jiayu was killed instantly in the bullet, became one of the most senior generals of the Sichuan Army in the war of resistance to be martyred. He became one of the highest-ranking generals of the Sichuan Army killed in the War of Resistance. Strictly speaking, the Sichuan Army in the War of Resistance could not be considered a regular force of the Chinese army, but a local warlord arm. Neither the equipment and military quality of the troops nor the treatment of the troops could be compared with the Central Army of the Kuomintang. But the war of resistance against Japan, this unit with their own fearless sacrifice for the "Sichuan army can fight", "no Sichuan army" reputation.