The Kham region is mainly in the Hengduan Mountains, and the conditions in the region are extremely favorable for the survival and development of animals and plants. The vegetation has a variety of components of Palearctic flora, Central Asia, Himalayan and Indo-Malaya. The relict species of many ancient plants, such as arbor fir, hemlock, incense tree, water blue, dove tree, etc., especially the ancient plant species of the Tertiary such as spruce and fir account for more than half of the country. The forest resources are rich and widely distributed, and it is the main part of the southwest forest area, the second largest forest area in China. Forest species are extremely complex. Economic forests and fruit trees are abundant. It is rich in various Chinese medicinal materials such as fritillary, cordyceps, gastrodia, rhubarb, notoginseng, ephedra and so on. The variety of flowers is even more diverse, especially many varieties of rhododendrons, primroses and camellias. Animals have a variety of components such as the southwest region of the Oriental realm, the Qinghai-Tibet Plateau region of the Palearctic realm and the northern part of China, and mammals, birds and fish account for more than half of the total number of the country. Precious and rare animals are protected by the state, including giant pandas, golden snub-nosed monkeys, black golden snub-nosed monkeys, white-lipped deer, wildebeest, bison, wild elephants, gibbons, red pandas, antelopes, forest musk deer, leopards, clouded leopards, musk deer, sambar deer, Tibetan snowcock, green-tailed red pheasant, blood pheasant, etc.

The Hengduan Mountains are a huge ecological treasure trove, not only with rare animals such as giant pandas and countless incalculable rare plants, but also with a large number of minerals. The Hengduan Mountains are an important non-ferrous metal mineral area in China. Among them, there are more than 100 kinds of mineral deposits dominated by non-ferrous metals in the Jinsha River, Lancang River and Nujiang metallogenic belts. The metallogenic belt around the confluence of the Yalong River and the Jinsha River is rich in vanadium titanomagnetite, such as the Panzhihua area (see Panxi area), which is one of the regions with large iron ore reserves in China, and is also an important base for the production of vanadium titanium and other non-ferrous and rare metals in China. The Hengduan Mountains are the main distribution areas of hydropower resources in China. For example, the Jinsha River has a drop of more than 3,000 meters in the main stream at the dry water level, including tributaries, and has a hydropower reserve of nearly 100 million kilowatts.

Li Ji sent Sun Chang to Chengdu Mansion to prepare for the capture of Kham and Dali in the future. The main work is to build roads and bridges, plus buy people's hearts.

The main work of the newly formed Shunan Group, a subsidiary of the Chenji Group, is to build roads into Weizang and Bagan, while promoting the evolution of various tribes from primitive hunting civilization to agricultural civilization (that is, to build small towns that can be paid in installments to attract indigenous immigrants and enter the market economic trap laid by the Chenji Group).

It can be said that as long as Sun Chang builds the road in place and pulls enough natives into Chenji's economic system, he is not afraid of those high-level nobles who do not have grassroots support to make small moves (the big move is to go to war directly, it is estimated that they do not have the courage to dare to challenge the Great Song Empire). The forces of those tribes and the state were too scattered, and it was precisely because of the dispersion that it was convenient for Sun Chang's strategy of peaceful evolution.

Before entering the modern industrial civilization, the fundamental reason for maintaining a simple 'serfdom' social structure in the Hengduan Mountains for thousands of years was that there was inconvenient transportation and insufficient arable land and agricultural resources to support the rule of the Central Plains Dynasty. As the old saying goes, 'someone does the business that kills the head, but no one does the business that loses money.' 'The cost of ruling the southwest was far greater than the benefits and outputs gained from the land, so with the exception of the Yuan, Ming, and Qing dynasties, which discovered the copper deposits, none of the previous dynasties could support effective rule over the land for more than a hundred years. All of them have been discarded because they are losing money and have no strategic value.

Chenji Group also looked at the copper, iron, tin and jade resources in western Sichuan and Dali, and at the same time looked at the population and market that far exceeded the northwest front.

The first phase of the project is mainly to renovate and improve the road traffic system of various prefecture-level units in Chengdu Fulu, and to turn several prefectures along the border into trade windows and special zones with convenient transportation. The plan to build a border trade free zone was too advanced and was rejected by Li Ji, but Li Ji agreed to the next level of development in the state. Weizhou, Yongkangjun, Shuzhou, Qiongzhou, Yazhou, Lizhou, Maozhouman, Baobaman, and Tribal Man, and other border states should achieve the goal of connecting cities with horse-drawn carriages and two-lane highways and the five-level highway standard for state-level cities to Chengdu.

There is a way that poor mountains and bad waters come out of the people, and a large number of mountain peoples can become a powerful source of soldiers. According to history and reality, the children from poor places are always more effective than the soldiers from rich places, especially the southwest region has always been a headache for the Central Plains Dynasty. The second phase of the project is that as long as there is enough time and preparation, Chenji Group will recruit a group of 100,000 elite troops to deal with all the large-scale forces in the southwest region, and completely promote the transformation of the land and return to the stream.

The significance of the Southwest Silk Road is far less than that of the Maritime Silk Road, and the popularity is not as good as the Silk Road in the northwest, but the military significance of the encircled Great Song Empire is extremely huge. It can be said that it was the only channel for the Great Song Empire to obtain strategic resources such as horses and cultivated cattle on a large scale.

The Sichuan-Tibet Ancient Tea Horse Road began in the Tang Dynasty, starting from Ya'an, the tea producing area of Yazhou in the east, passing through Dajian Furnace (now Kangding), reaching Lhasa in the west, and finally reaching Bhutan, Nepal and India, with a total length of nearly 4,000 kilometers.

The Ancient Tea Horse Road has led to the social and economic development of Tibetan areas. Along this road, along with the tea and horse trade, not only a large number of industrial and agricultural products from the interior were introduced into the Tibetan areas, enriching the material life of the Tibetan areas, but also the advanced technology, science and technology, and skilled craftsmen from the interior also entered the Tibetan areas, promoting the economic development of the Tibetan areas.

For example, due to the needs of tea transportation, the tannery technology from the mainland was introduced to Tibetan areas, so that the leather processing industry in Tibetan areas developed; For example, due to the development of commerce and trade, a large number of technologies and craftsmen from the hinterland, such as gold panning, vegetable planting, construction, and gold and silver processing, were imported through this channel, which promoted the development of agricultural technology, gold mining technology, and handicraft industry in Tibetan areas. At the same time, due to the expansion of trading items, Tibetan Cordyceps, fritillary, rhubarb, Qin Qi and other medicinal materials have been developed, and the production of card mats, shuttlecocks and ethnic handicrafts has also been driven and has developed greatly. According to statistics, 30 million catties of tea were produced in Sichuan in the Song Dynasty, half of which was transported to Tibet through the Ancient Tea Horse Road. In the Ming Dynasty, 30,000 Sichuan teas were traded through Liya and Jiemen ports, accounting for more than 80% of the whole Sichuan tea. In the Qing Dynasty, the Sichuan tea that was exported through the arrow furnace reached more than 14 million catties per year. At the same time, a large number of Tibetan native products are also exported through this route. According to the statistics of the Long March in later generations, 4,000 kilograms of musk, 30,000 kilograms of cordyceps, 5,500,000 kilograms of wool, and more than 60,000 shuttlecocks were transported to the mainland from Kangding every year, with a total value of more than 400,000 taels of silver. It can be seen that the potential of Sino-Tibetan trade is huge. The third phase of the project is to improve the overall productivity of the southwest region through technology trade and export promotion, and solve the hidden danger of economic imbalance in the trade of agricultural and sideline products with reduced transportation costs and increased output. The gradual advancement of the agricultural revolution and the commercial revolution will completely destroy the foundation of the Central Plains that is not interested in the Southwest.

However, from the perspective of trade structure, there is a big imbalance in trade between Han and Tibet. Tibet and southern Yunnan import tea, silk, porcelain, hardware products and other high-value-added products, and exports all primary products such as metals, furs, medicinal herbs, horses, cattle and sheep. The deficit can only be filled with profits from precious metals and entrepot trade to Tianzhu and other places. This is a good opportunity to bring power and influence out of the country. Pave the way and prepare for the four-phase strategy of Tianzhu and Bagan in the future.

Roads are a prerequisite for urbanization. Improved trade and transportation contributed to the rise and development of towns in the Yunnan-Tibet region. Many trading markets on the Ancient Tea Horse Road, distribution centers for pack caravans, business travelers, and accommodation points can form a town with residents in long-term commercial activities. It has promoted the urbanization development of local societies.

For example, the arrow furnace was still a desolate ravine in the Yuan Dynasty. After the Ming Dynasty opened the Diaomen and the Yanzhou Tea Horse Road, it gradually became a place where the packs and caravans gathered and distributed in the west of the Dadu River, and the Qing Dynasty opened the Vasigou Road, built the Luding Bridge, and set up the tea pass in its place, and quickly became the commercial city of 'Han Fan Wide Gathering, Merchants Gathered'. One of Sun Chang's tasks was to promote the creation of these central cities of trade distribution in the Song Dynasty in advance. The advanced ideology and the concentration of a large number of talents made Guozhuang, a special economic institution integrating inns, shops, and intermediary institutions, appear in the Kham area ahead of schedule.

Carrying caravans from the Yunnan-Tibet region and further afield traveled to and from various commercial base cities, and merchants from all over the country gathered in these newly built trading bases. It has formed a professional management of various merchants such as gold, musk, cloth, hada, medicinal materials, silk, skin, vegetables, tobacco, and groceries. Soon, 48 pot houses, 32 tea houses, and dozens of businesses dealing in different commodities appeared. New industries such as sewing tea, tanning, diet, and hardware have emerged. Houses, shops, hospitals, schools, government offices, and streets have been built one after another.

Named Kangding by Li Ji and other people, the new town has become a prosperous and lively 'slippery city' that is famous at home and abroad. Another example is Qamdo, because it is the transportation hub and material distribution center of the three ancient tea horse roads of Sichuan-Tibet, Yunnan-Tibet and Qinghai-Tibet. With the development of the tea and horse trade, it has become an important town in the Kham region and another center of Sino-Tibetan trade.

The fifth phase of the project is to make the southwest region the center between the South Asian subcontinent, the Tibetan and Song empires, and the countries of the Indochina Peninsula in Southeast Asia. However, this will be another century-old project, and Sun Chang hopes to see Yang Tho Baa City become a metropolis no less than Bianjing in his lifetime, which is also one of the few wishes of Sun Chang, whose hometown is in Dali.