大吹大擂 to boast
Explanation
形容许多乐器同时演奏，也比喻大肆宣扬，夸夸其谈。
Describes many instruments playing at the same time, but also refers to boasting and bragging.
Origin Story
话说梁山好汉攻打祝家庄，经过几番恶战，终于取得了胜利。凯旋而归的梁山好汉们个个神采飞扬，载歌载舞，锣鼓喧天，好不热闹。宋江大手一挥，决定在山寨设宴庆祝，犒劳将士。一时间，山寨里张灯结彩，欢声笑语不断。杀猪宰羊，摆下几十桌酒席，好酒好菜堆积如山。各路好汉围坐在一起，推杯换盏，畅谈胜利的喜悦。宴席上，宋江高举酒杯，向大家表达了感谢，并鼓励大家再接再厉，争取更大的胜利。大家纷纷响应，气氛热烈。夜幕降临，山寨里依然灯火通明，欢歌笑语不断，直到深夜才逐渐平静下来。这次胜利，不仅鼓舞了梁山好汉的士气，也让他们的威名传遍了江湖。
It is said that the Liangshan heroes attacked Zhujiazhuang and finally won after several fierce battles. The triumphant Liangshan heroes were all energetic, singing and dancing, gongs and drums roaring, and it was very lively. Song Jiang made a grand gesture and decided to hold a banquet in the mountain village to reward the soldiers. For a while, the mountain village was brightly lit, and there was laughter and joy. They slaughtered pigs and sheep, set up dozens of tables, with good wine and food piled high. The heroes sat together, drinking and talking about the joy of victory. At the banquet, Song Jiang raised his glass and expressed his gratitude to everyone, and encouraged everyone to continue to work hard and strive for greater victories. Everyone responded, and the atmosphere was lively. As night fell, the mountain village was still brightly lit, and there was singing and laughter, until it gradually calmed down late into the night. This victory not only boosted the morale of the Liangshan heroes, but also spread their reputation throughout the world.
Usage
常用来形容夸大宣传，也用于贬义场合。
Often used to describe exaggerated publicity, also used in derogatory contexts.
Examples
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他们团队取得成功后，就开始大吹大擂，到处宣扬他们的成就。
tamen tuandui qude chenggong hou, jiu kaishi da chui da lei, daochu xuanyan tamen de chengjiu.
After their team's success, they began to boast and publicize their achievements everywhere.
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这次产品发布会，公司大吹大擂，宣传效果显著。
zhe ci chanpin fabu hui, gongsi da chui da lei, xuanchuan xiaoguo xianzhu
At this product launch conference, the company boasted and the publicity effect was significant.