Hutou fort locates in the original Sino-soviet frontier in the east of Northeast China. It is one of important evidence that the Japanese imperialism invaded China. It locates in the veins of Wanda mountain around Hutou town, Hulin county, Heilongjiang province. west: Huoshi mountain; East : Wusuli river; facing the Yiman of Russia; South : Bianlianzi mountain; North: Hubei mountain. There are scores of forts which include Menghu mountain, Hubei mountain, Hudong mountain, Huxi mountain, Huxiao mountain. Menghu mountain is the main position.  Hudong ,Hubei are front positions, forming pincers-like to protect the main position. Huxi , Huxiao to the west of Menghu mountain, are the second line position behind the Menghu mountain. The main position Menghu mountain made up of Middle Menghu mountain, East Menghu mounatain , West Menghu mountain , was surrounded by bog region which is the natural.  Middle Menghu mountain where located the Japanese army headquarter of Hutou frontier elevates 111.8 meters. The straight distance to the East Menghu mountain , West Menghu mountain respectively is 350 meters and 300 meters. To  Wusuli river, 2000 kilometers. Middle Menghu mountain , the center of the underground fortification, is connected with the underground fortification of East Menghu mountain and West Menghu mountain by the tunnels. The underground fortification includes command headquarters, the communication room, soldiers room, the kitchen, the bathing room, the grain storage, the ammunition depot, the generating station and so on. The shaft lead to the observatory vent and exhaust hole, counter- attack hole.

                Part of Hutou fort

  Japanese Guandong army took Hutou fort as the base for attacking Soviet. The fort is inferior to the center of the Boli and Haishenwai, which restrains the Soviet far-east railroad, being the channel for the far-east Soviet Union army entering into the northeast China.

   In order to achieve the goal, the military strength is formidable. In March1939, Guandong army established the fourth border garrison which governed three infantries production brigades, five artilleries squadrons, one military engineer squadron. Hereafter, the establishment was expanded many times. At first, the commander is Changzhouzhang major general. The garrison based on 12 infantries and 13 artilleries has 8000 soldiers,. In 1941, the fort was at its strongest stage. The grain, clothing, ammunition, fuel can contaminate 10000 soldiers more than three months. The military force increased to one division of 12000 soldiers. Besides the conventional weapons, there are two 30 centimeters calibers artilleries, two 24 centimeters calibers artilleries, six 15 centimeters calibers cannons. In the west of middle Menghu mountain, there are eight ten centimeters calibers artilleries in the south of Huxiao mountain and in the west of east Menghu mountain, each infantry squadron has 17 mountain guns, 16 92-type infantry artillery, 8 middle mortars. Moreover, there are 18 anti-aircraft fire artillery and 10 anti-aircraft machineguns for the air defense.

   In order to strengthen the heavy artillery might, the great artillery from Tokyo bay fort was established in the northwest valley of West Menghu mountain. The diameter is one meter. The  body is 20 meters long. The range is 20 kilometers.  The   shell is 4 meters long.  Its  diameter is 40 centimeters. It is 120 centimeters long. The dose is 100 kilograms. There are 200 shells. The turret of the great artillery is in half underground reinforced concrete structure. It aims at Viman iron bridge and Lazuo water tower. Huoshi mountain, 30 kilometers to the west of Hutou town, has train artillery position which is 24 centimeters calibers train artillery whose range is 50 kilometers, whose aims is to destroy the transportation, cut off the water source, harass the rear supplies, bombing the military target. As the mobile target is too far to reach, the artillery was moved to the Huoshi mountain from Hutou.

  To defend the airplane and big caliber heavy artillery, the underground fortification was under the mountain. The top of the fortification was cement concrete which is three meters thick in the important part. On the ground , the fortification based on the terrain has trench and bankers which is advantageous for the crossing firepower. The channel, observatory made the ground and the  underground fortification unit .   The  wire netting were set up to prevent the tank.

  As for the grand scope, the great military installation, the firm defense, the strong attack force, the Hlutou fort was said to be the “east Maginot line” as a permanent fort.

  The military fort cost billions yuan. More than 100000 men were forced to build it. It takes six years to build the fort. In some sense, the fort is made of the bone of the laborers for thousands of laborers were killed during or after the construction.

  Before 7.7 emergency, the laborers were grasped , recruited, deceived from northeast china and north china secretly. After the emergency,, lots of prisons of war were also forced to be engaged in the construction.

  The brutal service, the inhuman treatment, the deficient food and the ultra intense physical labor caused massive deaths. In winter, the corpses were thrown into the grassy or abandoned in the wild mountain to feed the wolves. Jianachuanshan, a soldier once served the Hutou fort , said that he witnessed massive corpses in the wild middle Henghu mountain in his first year in the fort. It was said that these laborers were slaughtered collectively.

  How many laborers were forced to the fort and died, we did not know, for the Japanese did this secretly. But according to the Japanese data, there are about 2000 Chinese laborers around Manchuria serve the public team members that were sent to the fort to be engaged in the military road and artillery position, at least 12000 Chinese laborers were grasped or recruited. These laborers mostly were tormented to death or killed secretly with few fled. Guangqizhefu, a Japanese soldier, wrote the book “the secret record of Japan and Soviet union battle in the Hutou”, said that one day in Shiaowa 18^th year(1943), the fort was to be finished, the laborers were collected in the Menghu valley, they were given food and wine . Suddenly, the heavy machine gun spouted the large flame, the banquet field was changed into the slaughter house full of blood smell and mountain-like corpses.

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