On May 5, 1936, under the leadership of he Long and Xiao Ke, the red Army entered Zhongdian, which is today's Shangri-La, and propagated the Gospel of liberation along the way, sowed the flame of the red revolution. Hearing the rumor, the Living Buddha of Dongzhulin in Deqin County, Deqen Prefecture, Yunnan province immediately called a meeting of Acun Qunze and others in Derong County to discuss how to attack the Red Army's northward advance. After receiving the order, A Cun qun recruited more than 170 soldiers in the area of Zigeng township, and set an ambush at the Zhanaya pass, waiting for the arrival of the Red army. On the edge of the bridge near Yunnan, the vanguard of the fourth division of the second Red Army Corps saw a wooden sign posted by a man named Liao Zaan, which read: "Red Army officer, when we reached the village of Qiaotou, only eighteen poor tenants fled to the top of the hill. In the border of Yunnan within the village of Shangqiaotou, there are no bandits to ambush you, but I hope to be vigilant and wish you good health!" Tang Fulin, chief of staff of the fourth division, looked around the terrain and said: "This simple language is the loyalty to the Red Army. Comrades, we have information that a small band of bandits are on the opposite hill, and they want to take advantage of the dangerous position to ambush us. Get ready for battle at once!"
　　Knowing that there is a tiger in the mountain, inclined to tiger mountain line. The Red Army soldiers advanced along the rugged mountain road towards the steep zanaya Mountain. While climbing, the Red Army soldiers shouted loudly to publicize and explain the policy of the Red Army moving northward by way of the road. Ambushed in zanakya pass, The Asun group ordered to shoot at my vanguard and roll boulders. I three Red Army soldiers killed on the spot, the chief of staff of the fourth division Tang Fulin saw immediately ordered to return fire, but unfortunately in the battle shot sacrifice. At the moment of the red army soldiers furious, machine guns and rifles firing at the same time, throw grenades raindance, enemy commanding advantage with exorbitant gas 熖 disappeared: leaders in the village group has several bombs killed, was he forced to fight the crowd immediately retreat and its independence, the red army soldiers occupied the firm (pass, for diversionary measure to remove the obstacles. After the fierce battle, Marshal He Long stood on the pass and looked at the mountains on both sides and the fast-flowing Jinsha River. Thinking of the difficulties and obstacles of the Red Army's long March, he felt that it was difficult for people on both sides to fly across the Jinsha River. He decided to build a bridge here after the victory of the Anti-Japanese War to benefit the people.

　　In 1959, in memory of Marshal He Long and the red Army soldiers who sacrificed their lives passing through the area, and in order to completely solve the transportation difficulties of people on both sides of the River who had to rely on small wooden boats, with the strong support of the military stations, the He Long Bridge was built across the Jinsha River, connecting Yunnan and Sichuan provinces.

　　It was the first bridge across the Jinsha River in Diqing at that time, with a length of 108 meters, a width of 5.6 meters and a load limit of 10 tons. It belongs to cable-stayed cable suspension bridge, which is twisted by no. 8 wire and fixed on the solid stone piers on both sides. About 5.5 meters high, the tower is made of stone and concrete. 5 meters west of the bridge is the monument, north-south 2.12 meters long, east-west 1.15 meters wide, 4.5 meters high; The top of the eight characters are "immortal red Army martyrs"! After nearly 60 years of wind and rain, the ancient bridge is still benefiting people on both sides. It not only bears an unforgettable history on the Long March road, but also bears witness to the great achievements of new China and the earth-shaking changes it has brought along with the newly built National Highway 215.