The four characters combine to create a powerful and literal image: “to greatly unfurl the banners and beat the drums.” This ancient practice was used to announce a major event, boost morale before a battle, or celebrate a victory. Today, the idiom has lost its military-specific meaning but retains the core idea of a large-scale, highly visible, and noisy undertaking.
The imagery of 大张旗鼓 is deeply rooted in China's long history of grand ceremonies, festivals, and military displays. In a culture where public perception and social standing (面子, miànzi) can be very important, carrying out significant events in a grand manner serves to demonstrate power, success, and confidence. A company that launches a new product 大张旗鼓 is not just selling a product; it's projecting an image of strength and market leadership. A useful Western comparison is the phrase “to pull out all the stops” or “to make a big production of something.” Both convey a sense of using all available resources to make an event impressive. However, 大张旗鼓 is more specific in its imagery. While “pulling out all the stops” originates from organ music, 大张旗鼓 evokes a more visual and auditory spectacle of a parade or procession. This makes it particularly suitable for describing public campaigns, grand openings, and widely publicized events. It can be neutral, but it can also carry a hint of criticism if the “fanfare” is deemed excessive for the occasion.
This idiom is common in both formal and informal contexts. Its connotation depends entirely on whether the scale of the “fanfare” is appropriate for the situation.