China's transition from cold weapons to hot weapons was relatively late, probably at the end of the 19th century and the beginning of the 20th century. At that time, China was invaded and oppressed by the western powers. In order to strengthen its national defense, China began to gradually introduce and use various hot weapons such as machine guns, rifles, artillery shells, etc. With the continuous development and improvement of hot weapons technology, China had gradually become an important military power in the world.