While 射门 is a straightforward technical term, its cultural significance is tied to the immense popularity of soccer (足球 - zúqiú) in China. Soccer is arguably the most followed sport in the country, with millions of passionate fans tuning in for international leagues and the Chinese Super League (中超联赛 - Zhōngchāo Liánsài). When watching a match in a Chinese home, bar, or public viewing area, you will hear “射门!” yelled with anticipation, excitement, or frustration. It's the verbal cue for the peak moment of an offensive play.
射门 is a standard and versatile term used across different levels of formality.