In the late 1930s, China was in the midst of a war with Japan that had lasted for several years. The Chinese government was fighting to defend their country against the Japanese invasion, and they needed all the help they could get from outside forces. One such force was the Italian army.

In 1937, Italy entered World War II and began bombing and invading various countries, including China. They were hoping to gain territory and resources for themselves, but instead, they found themselves facing a strong resistance force led by General Zhang Yixiu. The Chinese government had organized a large-scale defense effort, known as the "Wing Defense," which included the construction of defensive lines and fortifications along the front lines.

One of these defenses was located in Shanghai, where the Italian army attempted to capture the city. In response, the Chinese government mobilized their best troops and built a series of fortifications and trenches around the city. The Italian army faced heavy resistance from the Chinese defenders, who were well-trained and equipped with modern weapons.

As the siege dragged on, the situation became increasingly dire for the Italian army. They were running low on supplies and ammunition, and many of their soldiers were suffering from disease and malnutrition. Despite this, they continued to fight bravely, determined to take the city back by any means necessary.

In the end, the Italian army was defeated and forced to withdraw from Shanghai. However, the experience of the Siege of Shanghai had a profound impact on the Chinese people and their resolve to defend their country against foreign aggression. It also helped to solidify the position of the Wing Defense and its role in defending China during the war.