In April of the sixth year of Daxuan Taihe, Meng Yan held a great court meeting in Chengdu, announcing the use of troops against Dachu, ordering the pacification of the southern border, with Wu Guogong and the commander of the Tiger Army Yu Geng as the main commander, and Baoqing went south, with Jianning County Gong and Vientiane Army commander Jing Yi as the right army out of Ronggui, with Xiangyang Hou and Changsha General Deng Ang as the left army out of Luling, and Hengnan Bo Zheng Xi as the vanguard army, first under Hengyang, the Central Plains was in an uproar.

In August of the fourth year of Daning Jinghe, Xiao Yu announced the use of troops against Xiling in Jinling, with Yan Wang Quanxi as the northern army to attack and harass the southern Jinnan, and Teng Han, the new Duke of Luguo, as the southern route army to march into the southern Jinnan, and at the same time sent an envoy to Chengdu to reconcile with Daxuan.

At the beginning of September, all the generals of the Great Xuan Southern Expedition gathered in Baoqing City to swear, and then the vanguard army of Daxuan Heng Nanbo Zheng Xi went all the way to Hengyang, and the Great Chu Hengyang guard general Zhuo Xun was defeated all the way, until September 18, all the surrounding counties and counties of Hengyang fell, Zhuo Xun could not go south, and retreated to the territory of Luling on September 21.

On the ninth day of the first month of September, Deng Ang, the commander of the Daxuan Left Route Army, launched an attack on Fuzhou Tangyuan on September 12, Tangyuan held on to Fuzhou and fought to the death, and the Jiangyou war fell into a stalemate.

On September 14, Jing Yi, the commander of the Great Xuan Right Route Army, took Song Ji, the Marquis of Yeling, as the vanguard to go out of Yuping in southern Qiannan and went straight to Yizhou, on September 15, Jing Yi sent Nanbo Xiahou Xin out of Funing and went straight to Yulin, until the end of September, Song Ji occupied the entire territory of Yizhou, Xiahou Xin approached Yongzhou, and on the seventh day of October, Jingyi's army arrived in Silin County, the westernmost county seat of Yongzhou.

Zhong Roulan convened the ministers to discuss countermeasures, Song Jian, the Duke of Xiguo, arrived in Yongzhou with the Xiang brothers who returned to the south, and Song Jian rushed to Xiang Xu to enter Guizhou, and at the same time took Tang Yuan as the general of Zhenbei and Tang Yao as the governor of Luling, defended the northern line, and led the troops to Shaonanguan to defend with Poyang Wang Zhongfan.

The war of the Great Xuan South Expedition thus entered a stalemate stage, but the Great Xuan Emperor increased his troops to the south at the beginning of November of the sixth year of Taihe, with the obvious intention of further compressing the sphere of influence of the Great Chu.

At the same time, Daning's use of troops against Xiling did not go well, and King Quanxi of Yan harassed Jinnan many times but was blocked by Long Tingfei, and Teng Han, the Duke of Lu, was also repelled several times.

In November of the fourth year of Jinghe, Daning Yan Wang Quanxi and Lu Guogong Teng Han gathered troops together, the two armies were planned in Changshan, at the beginning of December, the snow fell in the north, and the Daning two armies crossed the Jinzhong belt and went straight to Suide, the Ling army was not well prepared, and the Suide line completely collapsed.

Empress Daling urgently summoned Li Qingque to supervise the battle, and in February of the fifth year of Jinghe, the two armies formed a confrontation situation in Luochuan.

At this point, Daxuan's southern expedition and Daning's western expedition maintained a basic common pace, and the first phase of the war ended.

In May of the seventh year of Daxuan Taihe, Daxuan took the commander of the Condor Army, the general of Kaifeng, the princess of Baoqing, and Xiahou Zhou Ce as the main alliance with Xiao Han, the king of Anqing County, Daning, and the two sides signed a non-aggression agreement and a mutual assistance agreement.

In September of the same year, Menghuan, the king of Daxuan Qin, led 100,000 white-clothed troops out of Hanzhong to attack and harass Guannei, and in October, Daning withdrew from the right area of the river in Qingwu, and gave up Raozhou and Wuzhou.

In April of the eighth year of the Great Xuan Taihe, the Southern Expeditionary Army went out again in full force, Wu Guogong Yu Geng personally came to Shaonan Pass, on April 16, the two sides fought under the pass, Poyang Wang Zhongfan was seriously injured, the Xuan army broke through Shaonan Pass on April 21, Zhong Fan was nowhere to be found.

On May 3 of the same year, Daxuan Song Ji turned south, crossed Daming Mountain and went straight to Yongzhou, Jingyi of Tunji Silin County immediately moved, and on May 19, the two armies converged under the city of Yongzhou, and Yongzhou was in crisis.

On May 6, Daxuan Xiangyang Hou Deng Ang and Chu County Hou Huo Youjian sent troops to Fuzhou again, Tang Yuan could not hold out, on May 14, Chu County Hou Huo Youji detoured to Yihuang, Fuzhou was besieged, Tang Yuan was not allowed to withdraw from the territory of Minyue after holding on for five days, on May 22 Huo Youji returned to Yuzhang, Deng Ang's army approached Luling.

Until June 6, Song Jian, the prince of the Great Chu Xiguo, withdrew from Yongzhou, and surprisingly Song Jian did not converge with Xiangxu to the north, but entered the territory of Qinzhou in the south, which was elusive, but soon the news of the Great Xuan's southern expedition was covered up by Li Qingque's beheading.

In the middle of May of the sixth year of Daning Jinghe, Teng Han raided Luochuan, Li Qingque was not ready to fight in a hurry, and then Teng Han's army was killed, all the way to the Yellow Emperor's Mausoleum, Li Qingque was divided and encircled, and Teng Han was personally beheaded under the horse, and a generation of famous generals fell.

Until Mu Yi, who succeeded Li Qingque, arrived, Teng Han had already occupied Baishui City, and Quan Xi, the king of Daning Yan, was also unceremonious, and by the end of September, he had taken the entire territory of Yansui Wuzhou, forcing Daling Xue Che to adopt a conservative posture.

At this point, the second phase of the battle between the Southern Expedition of Daxuan and the Western Expedition of Daning was over.

In March of the ninth year of the Great Xuantaihe, Mengyan convened the Fourth Great Dynasty Conference and the Second People's Congress at the same time, determined the national policy of the Southern Expedition, and at the same time determined that the Great Dynasty Meeting and the People's Sentiment Congress would be held once every five years.

In April, the end of the "two sessions", the Great Xuan Emperor Mengyan announced the opening of the third phase of the war, the Great Xuan Heng Nanbo Zheng Xi led the troops to the west to support, until June 19 and Song Ji besieged the city of Guizhou, Xiang Xu could not escape, was captured by Zheng Xisheng, and then escorted to Chengdu for trial, Xiang Xu's blood debt in Yuanzhou was time to be repaid.

Then Zheng Xi was awarded the title of Marquis of Guilin, Yu Geng ordered Song Ji and Zheng Xi to merge into one army, the army swept across the territory of Ronggui, captured Liuzhou in May, annexed Wuzhou in early June, and surrendered Rongzhou without a fight at the end of June.

In August, Deng Ang took advantage of the surge in the water of the right river of the river, and personally led 50,000 elite soldiers to quickly intersperse with Minyue, Tangyuan could not react, and retreated all the way south, until September when the rain stopped, only four states of the seventeen states of Minyue were still resisting.

The continuous campaign to retreat south made Tang Yuan exhausted, Tang Yuan died of illness in Fuzhou on October 13, at the end of December, the governor of Luling of Great Chu took the initiative to talk with Daxuan, and the day before the Great Xuan Taihe and the tenth year of Shangyuan Festival, the governor of Luling of Great Chu Tang Yao and Zhuo Xun announced that they would be attached to Daxuan, and the battle of Jiangyou was over.

In March of the tenth year of Daxuan, the remaining four states of Minyue were all surrendered to Daxuan, and at the end of April, Emperor Mengyan of Daxuan announced the end of the third phase of the war.

In May of the seventh year of Jinghe, Teng Han moved troops again, but at the insistence of Xue Che and Mu Yi, the war lasted until February of the eighth year of Jinghe, and after more than half a year of effort, the two sides won and lost each other, and the battle ended after Teng Han was stabbed, and Xiao Yu announced the end of the third phase of the war in March of Jinghe 8.

In August of the tenth year of Taihe, the Empress of Great Chu Zhong Roulan secretly sent Murong Changfeng to Chengdu for talks, and Murong Changfeng returned to Chenjing in November of the tenth year of Taihe, and then the Empress of Great Chu went south through Qinzhou, forcing Zhong Rouxuan and Zhong Rouning to retreat south to the sea, and pacified the land of Nanyue at the end of the tenth year of Taihe.

In the eleventh year of Taihe, Zhong Roulan announced that the capital would be moved to Bihai City, and at the same time ordered Song Yan to stay in Chenjing and Xiang Lie to be the general of Chenjing.

In the eleventh year of Taihe, Yu Gengqin, the Duke of Wu Guo, led the army to the north of Chenjing, and demarcated the west to Qinzhou, and the east to Chenjing as the boundary of Xuanchu in Dachu, so far the Great Xuan's southern expedition was over, and Dachu only left Qinzhou and Chenjing in the Central Plains, the southern border was basically pacified, and at the end of the same year, Meng Yan announced that the next year would be changed to Yuan Yuansheng.

After Teng Han returned to Jinling to recuperate, Xiao Yu recruited Yu Qingwu and Gan Ming's two generals together with Yan Wang Quanxi to manage the western expedition, and broke through Xijing in October of the ninth year of Jinghe, cutting off the connection between Longyou and Guannei, and then the king of Daxuan Qin launched a northern expedition, until the beginning of October of the first year of Yuansheng pacified Longyou, Xue Che fled north to the Beimu grassland, Li Jing fled back to Luochen, Geng Chao has been sticking to the Western Regions until the arrival of the prince of Daxuan, Geng Chao tearfully announced that he would join Daxuan, and the Longyou war ended.

Daning Jinghe announced the end of the Western Expedition at the end of the ninth year, and the following year Xiao Yu changed the first year of Tianwei in Jinling, so far only the southern Jinnan and Luobei areas of the Daling belonged to the area, and everyone no longer called it a country, but called the Luochen force.

In the first year of Daxuan Yuansheng and the first year of Daning Tianwei, the two countries held talks in Kaifeng and agreed on the sphere of influence of both sides.

The two sides take Longyou, Hanzhong, Kaifeng, Lianghu and northern Fujian as the boundary, the north and the south stand side by side, recognize each other's rule, and do not attack each other in the name of orthodoxy.

At the same time, it was decided that the two sides could send students to each other to study abroad, Daxuan opened the two institutes, and Daning opened the sailor supervision camp.

The world is called the "Northern and Southern Dynasties" period opened, within ten years, the two sides did not fight each other, the Daning Dynasty focused on the development of key cities, and formed six major cities in Daning in ten years, from west to east were Xijing, Taiyuan, Youdu, Jinan, Jinling and Yuhang.

Daxuan, on the other hand, pays more attention to people's livelihood, and has formed a regional development in Daxuan, with ten years of stable cultivation and gradually forming a central regional circle with Chengdu, Langzhong, Jianning, and Yeling as the center; The western regional circle centered on Nanzheng, Chencang and Jincheng; the northern regional circle centered on Nanyang, Kaifeng and Xuchang; the two lakes regional circle centered on Jiangxia, Yiling, Xiangyang, Changsha, Yuezhou, Baoqing and Hengyang; the southern regional circle centered on Guizhou, Yongzhou, Rongzhou and Yeling; The eastern regional circle centered on Yuzhang, Jiujiang, Luling and Fuzhou.

At the same time, the two countries have dense commercial, cultural and academic exchanges, forming a prosperous scene, and the development of the Central Plains has recovered to the heyday of Daling in the sixth year of the two sides, and the population growth has appeared a large-scale expansion scene.

Behind the prosperity and development is inseparable from the dedication of the courtiers of the two countries, of course, birth, old age, sickness and death are inevitable, Daning is okay, after the last "Qinhuai Blood Night", most of the older generation has almost lost everything, and only Chen Shuo has died of illness in the past ten years.

On the other hand, Daxuan was not so lucky, in the third year of Yuansheng, Lu Chongzong, the king of Xiang, died of illness, and was posthumously crowned King Xiao, and then Meng Jingye inherited the throne of Xiang.

In the fourth year of Yuansheng, Xue Zhen, the prince of Wanzhou County, died of illness in Chengdu, and his second son Xue Chen inherited the title and was reduced to the Marquis of Wanzhou County; The post of the middle hall of the guest house was taken over by Hou Jingpo, who will be the secretary of the secretary, and the post of the secretary of the house will be taken over by the cabinet, and the post of the secretary of the secretary, Min Ninghou, Hou Du Heng.

In the fifth year of Yuansheng, the governor of the infantry army Nanyang County Gongda Xi Qianbi, the cavalry governor Jinping County Gongtong Yan died of illness one after another, the infantry army and the cavalry governor were taken over by Wang Yuan of Yuewang Bo and Ma Jiong of Yongchang Bo respectively, Hou Tangyao of Luling County took over as the auxiliary commander of the Vientiane Army, and Hou Yushan of Kangshan took over as the auxiliary commander of the Vientiane Army.

In the seventh year of Yuansheng, the auxiliary commander of the Bai Ze Army and the general of the internal guard, Yuhou Ancan, died of illness, Yanque, the prince of Nanchuan County, took over the old post of Ancan, Qingyang Bohuan was appointed as the commander of the Bai Ze Army, and the Gong Jin Fu of Nayong County was transferred to the Commander of the Eagle Army, and Xue Zhen, the Marquis of Wanzhou County, took over as the Commander of the Bai Ze Army.

In the ninth year of Yuansheng, the general of Ba County, Jiang Jinbo, Dugu Bi, was assassinated to death, and was transferred to Tangbo Du Jun to take over as the general of Ba County.

In the tenth year of Yuansheng, the auxiliary commander of the Condor Army and the general of Jiangxia Beichuan County, and the uncle Gu Xifeng died of illness in Chengdu, Emperor Xuan Mengyan and Xuanhou Gu Qingfeng were sad, and gave the eldest son Gu Chengyu to inherit the Duke of Beichuan County, and Gu Hanyu was promoted to Nanjiang Bo among the concubines, and the position of the auxiliary commander of the Condor Army and the general of Jiangxia was temporarily taken by King Yong.