After Zheng Chenggong swore in the army, the situation in the land of China changed again.

In South China, at the end of 1646, after the death of Emperor Longwu, with the support of Ding Kuichu, the governor of Liangguang, and Qu Shiqi, the governor of Guangxi, Zhu Youlang, the king of Gui, declared the state of supervision according to the practice of the Ming Dynasty, and prepared to claim the title of emperor after a period of time.

But seven days after the imprisonment, the news came that Ganzhou, Jiangxi Province had been lost. Although Zhaoqing, Guangdong, was still a considerable distance away from Ganzhou, Jiangxi, and the whole province of Guangdong was still under the jurisdiction of the Ming Dynasty, Zhu Youlang led the courtiers to flee to Guangxi.

At this time, Emperor Longwu's younger brother, Tang King Zhu Yulu, arrived in Guangdong under the protection of Lin Cha, the former Zheng Zhilong's subordinate.

Seeing that King Gui had fled from Guangdong, Zhu Yulu hurriedly proclaimed himself emperor in December 1646, changed his name to Shaowu, and was known as Emperor Shaowu in history.

On 8 November, when the news of Zhu Yulu's ascension to the throne in Guangzhou reached Wuzhou, Zhu Youlang, courtier Ding Kuichu, and others were taken aback.

In order to clean up the hearts of the people, on November 12, King Gui Zhu returned to Zhaoqing from the east, and on the 18th, he announced that he was the emperor and changed to Yongli, known as Emperor Yongli in history.

In this way, within the province of Guangdong, two Southern Ming regimes were established almost at the same time, and they still followed the past party struggles in the imperial court.

Under the control of Su Guansheng, the Shaowu regime did not put the resistance to the Qing Dynasty in the first place. On the contrary, in order to compete for the imperial unification, Su Guansheng sent Chen Jitai as the supervisor and Lin Cha as the general soldier to mobilize the army to attack Zhaoqing.

Seeing this, the Yongli regime also dispatched troops, with Guangdong Xuedao Lin Jiading as the right attendant of the military department, and Xia Sifu as the supervisor of the army, together with Wu Jingbo Li Mingzhong, who was transferred from Shaozhou, led more than 10,000 soldiers to meet the attack.

The Ming Dynasty was on fire with each other, and when the soldiers met.

Taking advantage of the Shaowu regime's complete focus on fighting a civil war with the Yongli court to the west, Li Chengdong and others of the Qing army advanced rapidly from Fujian to Guangzhou via Chaozhou and Huizhou, encountering almost no resistance along the way.

On the way to the march, every place they arrived immediately swept away the Tang soldiers who passed on the military information, blocked the news, and used the captured Nanming magistrate to print and distribute a peaceful Tang newspaper.

On December 14 (January 1647), the Qing army's vanguard used Pabaotou to disguise itself as a Ming Dynasty army and unexpectedly invaded Guangzhou.

Su Guansheng urgently ordered the city gate to be closed and troops were transferred to fight. However, the elite soldiers were all sent to Zhaoqing to deal with the Yongli Imperial Court, and they could not be transferred back for a while. In this way, the important town of Guangzhou was occupied by the Qing army in a daze.

Emperor Shaowu and Su Guansheng all hanged themselves, and the Shaowu regime lasted only 40 days before it collapsed.

When the news of the fall of Guangzhou came, the Yongli court repeated its old trick again, leaving Zhaoqing and fleeing to Guangxi on December 26, 1646 (the third year of Shunzhi). When he arrived in Wuzhou, he was still afraid of being unsafe, and fled to Guilin through Pingle Mansion.

On the 19th day of the first month of 1647, Li Chengdong entered Gaoming from Sanshui, and Zhu Zhijian, the governor of Liangguang of the Ming Dynasty who stayed in Zhaoqing, fled without a fight.

Li Chengdong immediately ordered Luo Chengyao to stay in Zhaoqing, and led the main force to attack Wuzhou. Wuzhou defender Chen Bangfu abandoned the city and fled. On the 29th, Li Chengdong occupied Wuzhou. In February, Ding Kuichu, the first assistant of the Ming cabinet, surrendered and was killed.

After Li Chengdong captured and conquered Guangdong, the Qing army burned and looted everywhere, provoking an uprising among the people of Guangdong.

Zhang Jiayu went to Guangdong and personally led the peasant army to conquer Dongguan and Xin'an, Chen Zizhuang made a date with the Huashan peasant army to raise troops in Jiujiang Village in Nanhai County, and Chen Bangyan joined Yu Long, the leader of the peasant army, to raise troops in Gaoming.

The uprising in Guangdong forced Li Chengdong to return to the rescue, and Yongli temporarily got a respite.

In the southwest, in the first month of 1647, the Qing army invaded Sichuan, and Zhang Xianzhong of the Great Western Army was shot dead by the Qing army.

Under the aggressive situation of the Qing army, the rest of the Great Western Army retreated rapidly south under the leadership of four generals, Sun Kewang, Li Dingguo, Liu Wenxiu, and Ai Nengqi, crossed the Yangtze River, entered Guizhou, and occupied Guiyang, on the way Ai Nengqi was killed in battle during the attack on Dongchuan.

The Qing army led by Haoge pursued to Zunyi, due to the continuous conquest of Sichuan, the place was dilapidated and barren, and could not solve the supply of food and salary, Haoge led the Manchu and Han armies to withdraw to Beijing through Shaanxi, leaving Wang Zuntan, Li Guoying and other generals who wished the Ming Dynasty to surrender to the north of Sichuan to have a corner of Baoning.

The Great Western Army was freed from the pursuit of the Qing army and was able to reorganize its interior and recuperate.

In central China, in February 1647, the Qing Dynasty sent Kong Youde, Geng Zhongming, and Shang Kexi south from Beijing, took Hunan, and occupied Changsha in February 1647. After that, Kong Youde sent Geng Zhongming's troops to the north to attack Changde, and Shang Kexi's troops went west to enter Youxian County. By the end of the year, except for some Tusi in western Xiangxi, the entire territory of Hunan was obtained by the Qing Dynasty.

In June and July, in the middle of summer, the Qing soldiers took refuge in Changsha and Hengzhou, and temporarily stopped marching.

On the southeast coast, in June 1646, Lu Jianguo was killed by the Qing army in Zhejiang, and was welcomed to Xiamen by two brothers, Zheng Cai and Zheng Lian.

Zheng Cai was therefore the feudal prince of Lu Jianguo, and Zheng Lian was named Dingyuan Bo.

Zheng Cai greeted Lu Jianguo at the beginning, but he just wanted to manipulate him in the palm of his hand, and take the opportunity to elevate his identity so as to stabilize the power he inherited from Zheng Zhilong.

Since being rewarded by Lu Jianguo, Zheng Cai and Zheng Lian, whose positions have become increasingly stable, have revealed their true intentions.

Zheng Cai is tyrannical and tyrannical, and Zheng Lian is greedy and lustful. These two people no longer took Lu Jianguo in their eyes, and they arbitrarily insulted and killed the civil and military officials appointed by Lu Jianguo.

The people under their rule were also forcibly expropriated and plundered, coupled with the soldiers of the army who had not been strictly trained and disciplined, with Zheng Cai and Zheng Lian's greed for pleasure, they became more indulgent.

The soldiers have no fighting spirit, and if they fail to defend their homes and defend the country, they will only harm the people. The people of Xiamen mourned and said that they hated the two brothers Zheng Cai and Zheng Lian.

In order to get rid of the control of Zheng Cai and Zheng Lian's brothers, but also to strengthen his own strength. In February 1647, in the name of pro-conquest, Lu Jianguo left Xiamen and went to Changyuan to take an oath and call on the gentry from all over the country to revolt. For a time, Fujian and Zhejiang responded one after another, and the rebel army soared.

On the first day of February, in order to save his reputation and his own safety, Zheng Cai sent his younger brother Zheng Lian to lead his troops to return to Beijing with the Qing Dynasty's southern general Dorobellebolo, and captured Hayden, who left only a few soldiers and horses. However, the occupation of Hayden lasted only five days, and the Zheng coalition army, which was already a rabble, was recaptured by Zhao Guozha, the commander of Zhangzhou.