After conquering the Western Regions, Zhang Yi set his sights on Qinghai, Tibet, and Southeast Asia.

In May of the 15th year of China, Di Qing led Wang Ping, Wang Yansheng and other generals to the west to attack Zhuqiang.

Di Qing led a large army from Baimaqiang, walked Jishi Mountain, and attacked the head of the Cizhi River. Baimaqiang has been incorporated into Liangzhou, and the head of the Cizhi River is the source of the river, which is the gathering place of Xiqiang. Xiqiang is a general term for the Qiang people outside the territory of the Han Dynasty, and Cizhi is their name for the river.

There are a lot of Qiang people, and now most of the Burning Dangqiang, Baima Qiang, Qi Niu Qiang, Da Qi Qiang, Longqiao Qiang, and Bo Shen Qiang have been subdued by Fan Zhongyan and Di Qing, and they have expanded hundreds of miles to the west without spending a single soldier. Fan Zhongyan changed the subject state of Shu County to Hanjia County, the subject state of Qianwei to become Zhuti County, and the subject state of Guanghan County to Yinping County.

The gathering place of Baimaqiang was set up in three counties and merged into Yinping County. Daqi, Longqiao, Boshen, Qiniu and other Qiang, set up more than 10 counties, and merged into Shu County and Hanjia County.

The Qiang people in the head of the Cizhi River were also nomadic people, and often raided other Qiang, Liangzhou, Yizhou, and the Western Regions. When Wei Rui recaptured the Western Regions, he had already severely damaged the Qiang people in Cizhi Heshou and Xihai. When Di Qing attacked the head of the Cizhi River, he defeated the Qiang people in a battle.

Wang Yansheng and Wang Ping searched for a way west from Hanjia County, and they crossed the dangerous mountain roads to attack Tang Xuan and Faqiang.

Tang Xuan and Faqiang are not powerful tribes, and it is the plateau that protects them.

Di Qing had already trained a large number of cavalry in Yizhou who could climb the plateau before launching this attack. After three years, 20,000 cavalry led by Di Qing successfully occupied the entire Qinghai-Tibet Plateau. Zhang Yi set up the Qinghai-Tibet Protectorate, with Yang Hong as the Governor of the Qinghai-Tibet Protectorate. After Yang Hong arrived on the Qinghai-Tibet Plateau, he set up more than 10 counties in Qinghai-Tibet, with the head of the Cizhi River as the head of the river, and set up the seat of the Qinghai-Tibet Protectorate.

Just when Di Qing attacked Zhuqiang, Fu Youde also launched an attack on Panyue Kingdom.

Yunzhou has developed very well in recent years, and even the most barren Yongchang County has built a large number of roads, and the development has formed an industrial chain around Buwei County to develop Yongchang.

Fu Youde assembled an army in Yongchang and gradually transported grain and grass to Pubu. In December of the 14th year of China, he launched an attack when the miasma in the rainforest was the least.

Panyue country is now the Sadia region of India, Fu Youde did not go over the high mountains, but went south to attack the territory of today's Burma, until three or four hundred miles away, after the mountains eased down, then crossed the high mountains, entered the territory of today's India, and then went north to attack the country of Panyue.

Panyue has been harassing Yongchang County over the mountains over the years, after all, Yongchang County has gradually become rich. Because of the high mountains, it is still possible for small troops to climb over, but most of them are not. If Fu Youde wants to destroy the Panyue Kingdom, he needs to bring an army of more than 10,000 people. When Fu Youde led the army to Panyue Kingdom, the whole country of Panyue Kingdom was stunned, and it was destroyed by Fu Youde in less than ten days.

After destroying the Panyue Kingdom, Fu Youde sent Ma Renyu to expand the land to the west of the river. It is true that both the country of Panyue and today's Myanmar have a large number of plains and rich land. Fu Youde also established county governance here, and then gradually moved people to these places.

Zhang Yi set up the Burmese region as Nanyun County and Xihai County, and set up Xiyun County in the Panyue Country area, which was attributed to Xizhou, and the seat of governance was in today's Yangon, named Xihai County. Take Zhu Ran as the history of Xizhou.

In November of the 15th year of China, Lin Fengxiang also sent troops to Rijiao Prefecture to attack what is now Laos, Thailand, Cambodia and other places. He himself sent troops from Cochin to attack the area of Laos. Yi Lu Guang sent troops from Ninan County to attack the area of Thailand. With Meng Huo, he set out from Linyi and attacked the Cambodian region.

In three months, Lin Fengxiang and the three of them destroyed the Lin Yi Kingdom and successfully took all the areas east of the Fu River.

Zhang Yi set up Vientiane County in Laos, Ha Mae County in eastern Thailand, Haizhong County in Cambodia and southern Vietnam, and Shang Mae County in western Thailand.

Vientiane County, Ha Mae County, and Haizhong County were under the management of Jiao Prefecture, and Shang Mae County was under the management of Xihai County.

In the sixteenth year of China, Fu Youde and Lin Fengxiang sent Ma Renyu and Meng Huo to attack the Malay Peninsula in the south, until they reached the Lion City, which had become a large-scale city. The northern part of the Malay Peninsula is set up in the Upper South Division, and the southern part of the Malay Peninsula is located in the Southern District. The two counties were also placed under the administration of the Western State.

In the same year, Zhang Yi named his son Zhang Xingxin as the king of Lu, fiefdom Lu County, and was sent out to attack the Java Islands. Zhang Xingwen was named the king of Chen, and the fief of Chen County was sent to attack the islands of the East China Sea (present-day New Guinea Islands). Zhang Xingliang was the king of the dynasty, and the fief was Dai County, and he was sent to attack Australia.

All three sons were born in 208 and are now adults. Zhang Xingxin received help from the Zhou family, and several of Zhou Yu's sons had a good relationship with him, and in less than a year he conquered the Java Islands. The Java archipelago is rich in animal, flora, and mineral resources.

Zhang Xingwen received the support of the Xuzhou faction such as the Mi family and the Sun family, and after taking the East China Sea Islands, he mined a large amount of copper, gold, and nickel from the East China Sea Islands.

Zhang Xingliang received the support of many northern scholars, attacked the island of Australia, obtained a large amount of arable land in the north and east, and ceded the Gobi zone in the middle to attack the southern region. It can't be said to be an attack, because there are no aborigines in Australia, and going up is development. At first, it was based on a few seaports, and gradually cultivated land was developed to obtain trees and minerals.

In recent years, Zhang Yi can be said to have obtained a lot of wealth from Southeast Asia, and the wealth represented by countless gold and silver has made the scholars feel crazy, and even to the extent that it has affected agriculture in the Central Plains.

Fortunately, Zhang Yi has been implementing his own policies over the years, which has increased the number of newborns a lot, ensured the survival rate of these newborns, and strengthened education to improve the culture of the new generation.

Zhang Yi conducts a census every five years, and by the time China was five years old, there were 20 million people in the country. In the past ten years in China, it has reached more than 42 million people. In the 15 years of China, the population had reached more than 78 million. In ancient times, when productivity was low, it was indeed difficult to feed so many people with China's inherent arable land, but fortunately, Zhang Yi developed a large amount of arable land in Southeast Asia, and the food was continuously transported back to China by sea to support so many people.

On the other hand, with the support of Zhang Yi, Jia Siqian also began to study new grains and hybrid grains, but the research of hybrid grains is very difficult, and he can only find ways to find new varieties.