How many generations are there in Manchuria?

The gate of Manzhouli, a symbol of the country's rise and fall, is now a famous tourist attraction. Since the founding of the People's Republic of China, there have been five generations of countries-the first generation: at the end of the Qing Dynasty, according to Manzhouli Station, 20 kilometers away, there was a Russian double-headed eagle with a wooden stake standing next to it. The words' Baikal Railway Border' were written on the stake, which was unilaterally set up by Russia. The national emblem and wooden stakes are located on the Sino-Russian border, so they are called "national gates". Second generation gate: built in 1920, about 300 meters away from the current Sino-Russian border, located opposite the post-Baikal station, in the courtyard of the Soviet border guard station. It's a wooden archway, with three characters of "China-Soviet Gate" written in Chinese characters on the front and the Soviet Union written in Russian on the back. Manzhouli people call the location of this country "Shili". The reason is that this national gate is only 18 miles away from the center of Manzhouli. Now, the name of the "Shili Post" of a border defense group stationed here in the Inner Mongolia Military Region comes from this. The third generation of national gate: built in 1968. This country has an obvious brand of the times. The national gate is made of iron and wood, and a striking red slogan is embedded directly above it: "Proletarians all over the world unite". At that time, Sino-Soviet relations were tense, and Manchuria was in a state of "preparing for war" for many years. The fourth generation of international gate: construction started in June 1988, 15. The national emblem hangs in the middle above the national gate, and the top of the national gate is inlaid with seven red characters "People of China and China". There are wide-gauge railways and quasi-gauge railways under the national gate. (Note: The width of train tracks between China and the Soviet Union is different. China's narrowness is the standard orbit, which is called "quasi-orbit"; The width of the Soviet Union is called "wide track". Trains from China and the Soviet Union, whether trucks or buses, must be replaced by trains from the other country here to adapt to the train tracks of the other country. The fifth generation of the country gate: fully considering the development prospect of Sino-Russian trade, the railway was transformed from one wide and one narrow to two wide and one accurate, and the position of two quasi-rails was reserved. The fifth generation of Guomen has a total investment of about 82 million yuan, with a total length of105m, a width of 46.6m, a height of 43.7m, a bridge height of16.9m and a total construction area of 6,000m2. The architectural style is post-industrial style.