Daily Chinese Idiom Guessing Game
To do something with great fanfare or in a big way, making a lot of noise and show.
张陈设，展示；旗鼓旗帜和战鼓。形容进攻的声势和规能大。也形容群众活动声势和规能大。
清·张春帆《宦海》第九回李参戎带著这些人陆续出了镇南关，便大张旗鼓，排齐队伍，浩浩荡荡的向前进发。”
The company launched its new product with great fanfare, going all out to attract attention.