guǎng gào / chuī / de / tiān huā luàn zhuì / dàn / shí jì / chǎn pǐn / xiào guǒ / hěn / yì bān

广告吹得天花乱坠，但实际产品效果很一般。

The advertisement hyped it up lavishly, but the actual product's effect was mediocre.