After the establishment of the Yuan Dynasty, having learned the painful lessons of the Song Dynasty, the Yuan Dynasty decided to implement the "Sui City Order" to massively tear down the strong city walls in the Central Plains and the south, and fill in the moats so that the Mongol cavalry could enter and exit freely and be invincible. However, in the late Yuan period, in the face of the strong rise of rebel forces such as the Red Turban Army, the Yuan army was almost impossible to defend. Chen Youcheng, Zhu Yuanzhang, Mao Gui and other rebels, water bandits and pirates took advantage of the weakness of the Yuan Dynasty's "Sui Cheng Order" policy to cause the Yuan army to retreat. Within a few years, the entire Jianghuai Sichuan-Shu region lost control, and the capital of the Yuan Dynasty was burned down by the rebels.
The Qing Dynasty learned from the experience of the Yuan Dynasty and adopted different strategies. When the city was built, the Qing Dynasty allowed the Han to live, but inside the important large city, a Manchu-style high-walled courtyard was specially built, and the elite soldiers of the Eight Banners of Manchuria and their families were stationed in it. This approach can not only ensure the safety of the banner people, but also attack and control the Han people outside at any time. However, in the late Qing Dynasty, this practice led to the bannermen of Mancheng becoming targets of resistance forces such as the Taiping Army, the Twister Army, the Revolutionary Army, and bandits. The bannermen in the city were rich in wealth, but because they locked themselves inside the high walls, all parts of the city were looted. Millions of bannermen either changed their names and fled into hiding or were killed.
Taking history as a guide, ASML's implementation of lithography machine sanctions on China may trigger China's countermeasures and independent innovation, affecting the stability of the global semiconductor industry chain. In dealing with international relations and technological blockades, care and wisdom are needed to avoid excessive restrictions or discrimination against a particular group or country in order to maintain global stability. ASML demolition of the city wall and allowing Chinese lithography machines to enter the market can promote the development of the global semiconductor industry and promote the independent innovation and technological progress of China's semiconductor industry. At the same time, South Korea and Japan can also benefit from the development of Chinese lithography machine technology.