First, the geographical location of Yangguan was the only place where ancient China and other places passed by. It is also the only pass for the Silk Road to go south. Yangguan was built in the Han Dynasty. At that time, Yangguan was rich in water resources, with lush grasslands and fertile oases. At that time, in order to resist foreign aggression and trade with the west, Yangguan and Yumenguan were established in Hexi Corridor. Since the Western Han Dynasty, it has always been a military stronghold, and the court has sent heavy troops to guard it. With the geographical factors such as flash floods and river bed widening, since the Song Dynasty, the traffic with the western regions has gradually declined and become an abandoned site.
Second, the glorious history of Yangguan as a trade exchange with the western regions, Yangguan passed through the entrance of businessmen, envoys, monks and tourists from all over the world. There are also many literati who watched this scene and felt deeply, leaving many immortal poems. Master Xuanzang, whom we are familiar with, returned to Chang 'an after learning from India and got the true scriptures. Archaeologists have also found many historical antiques here, and the number is very huge. The culture of burning ditch was discovered in Yangguan Antique Beach. In addition to military defense, Yangguan also acted as a customs. From the unearthed cultural relics, we can see the documents of the Bank of Communications at that time. After leaving Yangguan, you have to enter the Western Regions and the Manjiang River. It is a vast Gobi, with long and wide roads and no boundaries. This is also called. Yangguan avenue. ?
Yangguan, a city covered by desert, is an ancient city praised by literati for thousands of years. For thousands of years, people's complex about Yangguan has solidified in the implication of Wang Wei's Wei Cheng Qu. Although Yangguan is no longer in its heyday, Yangguan is bringing us rich historical knowledge and valuable wealth with its culture.