Shotgun/shotgun, the word itself is imported, and the original word comes from Japanese. The word?has been read in China since ancient times, but it is pronounced as さん san in Japanese. The word "Yue" was clearly marked as a polyphonic word in the dictionaries of 1970s and 1980s. xian is usually pronounced, and san is pronounced when using weapons vocabulary, such as Yue (san) gun and Liu (san) bullet. Later, with the simplification of modern Chinese, the sound of san was cancelled and xian was read uniformly. Therefore, it's standard to read xian bullets, and it can't be wrong to read san bullets. Moreover, it is said that at present, the naming rules for the weapons and equipment of the troops in the army do not seem to stipulate the shotgun as xian.