Did Zhuge Liang Miss the Opportunity for a Surprise Attack through the Ziwu Valley?

Hello everyone, welcome to History and Culture. Throughout the long history of the Three Kingdoms period, many questions remain hotly debated to this day. Yet there is one topic that never fails to get Three Kingdoms fans more and more excited the longer they discuss it. Should Zhuge Liang's northern expeditions have taken the Ziwu Valley route? Most people have heard of this question, but perhaps have never really stopped to think it through. To answer it, we must first return to that era. After Liu Bei's death, Zhuge Liang became the core figure of Shu Han. He was not only the chancellor, but also a statesman and strategist who had to shoulder the heavy responsibility of restoring the Han Dynasty. Shu Han's national strength was originally far inferior to that of Chao Wei. And the province of Yizhou was a basin surrounded by mountains on all sides. Advancing northward was never easy. In order to fulfill the dying entrustment Liu Bei gave him at Beidisheng, Zhuge Liang had to be cautious, and then even more cautious. At that time, Shu Han had essentially two routes for a northern campaign. The first route lay to the west, passing through the Chong tribal regions and the areas around Luoyang. Entering Yuzhou, and then advancing on Chang'an. This is the route Zhuge Liang repeatedly used in his five northern expeditions. Later generations habitually called it the right-hand route of the Longzhong plan. Or simply the Longyou route. The other route lay to the east, the famous Ziwu Valley. Taking Ziwu Valley meant cutting straight through the Qinling mountains from Hanzhong. Once you emerged, you were almost at Chang'an. Short distance, close proximity, time-saving, it looked extremely tempting. At first glance, everyone thinks, there's a shortcut right there, why not take it? Isn't going the long way around too exhausting? But war has never been as simple as picking the shortest line on a map. Thus, around these two routes, history produced two opposing schools of thought. One was the cautious, represented by Zhuge Liang. The other was aggressive, represented by Wei Yan. To understand the two proposals, let us begin with Zhuge Liang. Zhuge Liang insisted on the western route for several very practical reasons. First, although the Longyou route was long. The terrain along it was relatively open. And suitable for garrison farming, tuncheon. A northern expedition was a protracted process. You couldn't just sprint through like the wind. Supply lines and provisions determined whether an army could keep advancing at all. The Longxi region could not only provide warhorses. But was also good for agriculture. Zhuge Liang attached extreme importance to logistics, in his view. Without sufficient supplies, even if you won battles you could not hold the ground. Second, taking the western route meant less pressure on the army's flanks and rear. If the army rushed straight toward Chong'an via Ziwu Valley. The moment it emerged from the Qinling Mountains. It would be standing in the very center of Chaowei territory. With the main Wei armies of Chong'an and Luoyang to the east. And the garrisons of Yuzhou and Liangzhou to the west. Geographically. The Shu army would be caught in a pincer between two Wei forces. For a Shu Han whose national strength was already far weaker than Chaowei. The risk was enormous. Zhuge Liang was not unwilling to win. He was simply unwilling to gamble on a plan where the slightest mistake could bring total disaster. Therefore he chose to advance steadily. Gradually weakening Wei's border defenses. And only closing in on the Guanzhong region when the opportunity was truly ripe. This strategy was slow. But for a weaker state it was the most realistic path. Having discussed Zhuge Liang. Let us now turn to Wei Yan. Wei Yan is an extremely controversial figure. As the chief commander defending Hanzhong. He guarded Shu Han's northern gate all year round. And was intimately familiar with the terrain. His personality was the complete opposite of Zhuge Liang's. He was bolder, more adventurous. And possessed the daring of a true warrior. The records of the Three Kingdoms, Sangwozi, records that. Wei Yan once proposed to Zhuge Liang that they split their forces. He himself would lead a surprise attack on Chang'an while Zhuge Liang attacked along the western route. And the two armies meeting near Tong Pass. In the Wei source Weiliu. There is even a record of Wei Yan's extremely confident operational plan. He believed the defender of Chang'an, Xia Homao, was young and inexperienced. He claimed he could take 5,000 elite troops. And make a lightning raid through Ziwu Valley to Chang'an. Each soldier carrying his own dry rations. Requiring no supply line from the rear. And reach the city within 10 days. The Chang'an garrison would be so shocked by the sudden attack that they would flee without fighting. He would then only need to hold the city for 20 days using captured grain. Until Zhuge Liang's main army arrived. And together they could take the entire Guangzhou region. The plan sounds magnificent. But when you break it down carefully. You discover it rested on three absolutely indispensable premises. Wei Yan's 5,000-man taskforce had to successfully traverse Ziwu Valley in 10 days and reach Chang'an. Xia Homao had to either offer no resistance or abandon the city and flee after only token resistance. Wei Yan had to hold Chang'an for 20 days. And Zhuge Liang had to arrive with the main army within those 20 days. If any single one of these three conditions failed. The entire plan would collapse throughout history. Several famous generals. Tried to use Ziwu Valley for surprise attacks on their enemies. But all were discovered in time and failed. Although the Qinling Mountains are precipitous. They also make it very easy to expose one's movements. Once discovered, a taskforce in those narrow mountain paths. Could neither march effectively nor retreat quickly. And was likely to be completely annihilated. As for Xia Homao. Would he really flee at the first sight of the enemy? Although historical records do not rate his military ability highly. He was nevertheless Chao Chao's son-in-law. And enjoyed the full trust of the Chao Wei regime. As defender of Chang'an. He had no record of abandoning a city without a fight. Casually giving up the city. Would be an unbearable responsibility for both himself and his family. Thus this point alone carried enormous uncertainty. The final premise. Could Wei Yan actually hold Chang'an for 20 days? Defending a city is not just about holding the gates. The granaries, passes, and river crossings around Chang'an. Were all critical points that had to be controlled. With only 5,000 men. Wei Yan could hardly achieve comprehensive defense. Even if Zhuge Liang marched immediately. He still had to pass through Wei's Yuzhou and Liangzhou provinces. The commanders stationed there were not weak. If they blocked him with all their strength. Reaching Chang'an in 20 days would be far from easy. Therefore, from a realistic standpoint. Zhuge Liang's route was steady and executable. While Wei Yan's plan required conditions that were far too perfect. And depended on an extremely high degree of luck. Yet the most interesting part of the story is this. Many people say Wei Yan insisted on taking Ziwu Valley. But the historical records never explicitly state that. Wei Yan insisted on taking Ziwu Valley. The Sanguosi only says he wanted to lead 10,000 picked troops ahead as a surprise force and meet at Tong Pass. The version that explicitly mentions, taking Ziwu Valley, comes mainly from the Weiliu. The two sources have different emphases. And their absolute reliability cannot be 100% confirmed. Therefore, within historical circles. There has always been a small lingering question. Did Wei Yan really propose a plan that absolutely required going through Ziwu Valley? Or is it a later deduction derived from wargaming the campaign? This question may never have a definitive answer. But one thing is certain. Regardless of whether Wei Yan's idea was exactly as recorded in the Weiliu. He was indeed a brave and confident general. While Zhuge Liang was a supreme commander who always put the survival of the state first. And placed extreme emphasis on stability and supply. Both men were thinking for their country. They simply saw different paths. History is not mathematics. There is no single correct solution. Zhuge Liang took the path he could bear responsibility for. Wei Yan wanted to take the path that would require a miracle. Sometimes, understanding the reasons behind both choices. Is more important than arguing which one was right. Perhaps that is why historical stories can be told again and again. And remain forever fascinating. This is the History and Culture channel. Liking and subscribing are the greatest help and support to us. Thank you everyone and see you in the next time.