Angry river big gorge already passed from driven viatic Cheng half, we are in rest and reorganization of tribute hill county after a day, continue the name of a river in Shaanxi and Henan provinces in third of push forward of edge gorge highway. On the way road is worse and worse to go, but the tourist's car is less and less also, magnificent sight is more and more adjacent " enjoy alone " . We go to be patted all the way all the way, in doing not have occurrence fokelore " aesthetic exhaustion " . After the name of a river in Shaanxi and Henan provinces in arriving at third is pressed down again travel about half hour, we drive passed stone door to close, here also is the narrowest place in angry river all fronts. Abrupt cliff, try to prevent angry Changjiang Delta to fall like crawl, but dim Jiang Shui is like the ground of Ma Qun press forward with indomitable will that gallop to develop those who pass hill power to hold back however, growl and pass. It is one paragraph saves goodish in front " tea Ma Gu " relics, from here we begin pedestrian, the village in mist can reach after 2 hours. Allegedly, this is period of ancient course of archaic tea horse a paragraph of busy traffic post road. The goods that once had countless passes come-and-go of this forces post road between Yu Yunna and Tibet. The old way of way of Ma Gu of a paragraph of tea that leads to the village in mist. Form of visible here hill is abrupt, river water is surging, in those days a train of horses carrying goods people driving mulish a train of horses carrying goods to walk to be planted in this everyday namely narrow small, hardships and dangers, over ordinary alley, maintained the most crucial at that time international trade old standard. About millenarian before, ancient course of this tea horse already existed (the history but period of restrospect to Tang Song) , old post road start is in about today Yunnan general Er - the area that think of cogongrass, want to pass angry Jiang Daxia to Gu Yanxi flows and go up among enter Tibetan area, high mountain ridges and pure white snow mountain are crossed later, arrive at Bengal, India and other Xi Yahe finally north inferior area country, and this looks seeming negligible ancient way is at that time China and on the west inferior ligament of a each country is the most important onshore commerce. Besides produce the tea from Yunnan beyond, the kinds or types of goods that outside passing this Gu Daoxiang everyday, transports still includes the thing such as salt, cloth, medicinal material and flix; And through a train of horses carrying goods from on the west inferior each country and the goods that store inland of ground carry back wait with household utensils of flavor, daily expense, mulish horse give priority to. The travelling merchant of a train of horses carrying goods on come-and-go Yu Gudao, horse of pickaback of all without exception carries heavy goods on the back, have a train of horses carrying goods with body strong strong put oneself in another's position allegedly, a person can carry 60~90 kilogram goods -- the weight that the weight of goods exceeded oneself even. And these outstanding heaver great majority come from Sichuan and Yunnan two provinces. The goods that tea horse Gu Daoyun sends is given priority to with tea, in carriage process, tea is compressed tea cake or brick tea, so OK utmost ground reduces volume, much back is carried more. A train of horses carrying goods ships goods trade after the place, the thoroughbred Ma Hexi that can exchange Tibetan area with brick tea inferior, north inferior the content such as household utensils of the flavor that reachs middle east area, life, it is a kind of complementary sex is very strong trade means. According to Shi Zai, be in early bright generation is earlier, good horse can exchange tea at most 120 jins, be equivalent to pickaback of an a train of horses carrying goods content of one inferior goods. Arrived between 10 thousand past years, good horse can exchange tea 30 comb with a double-edged fine-toothed comb, 20 comb with a double-edged fine-toothed comb wait in, coarse 15 comb with a double-edged fine-toothed comb. Ming Daiwen learns a Shang Xianzu to ever was in " tea horse " write in the poem: "Black tea one He Mei, he Shu of Qiang Ma Yi. He Shu of Qiang Ma Yi.. This alley that we are in is named to be " tea Ma Gu " , because,be in ancient time Tibetan person needs everyday drinkable ghee tea, but area of high height above sea level does not produce tea however, and the demand that the army with outback many area and agriculture produce stallion of pair of high grade fine is exuberant, trade then both sides had collective demand, appeared then the road of a train of horses carrying goods of full-time and this famous tea horse. Walk the journey of tea horse ancient course neared end, ahead appeared an antiquated suspension bridge. Not far from here place is having namely " person mind is resided in all " the dorp of the Nu nationality of ground good name -- autumn that pail. Primitive hill village is spreading all over old frame house to build. So far, the brigade with our tea horse ancient pedestrian course also of short duration comes to an end.