大张声势 A big splash
Explanation
指大规模地进行宣传或活动，以扩大影响。
Refers to large-scale publicity or activities to expand influence.
Origin Story
话说唐朝时期，一位名叫李白的诗人，为了宣传自己的新诗集，决定大张声势地举办一场诗会。他广发邀请函，邀请了长安城内有名的文人墨客，甚至还邀请了皇宫里的官员。诗会当天，长安城内人山人海，热闹非凡。李白身穿华丽的衣袍，站在高台上，朗诵着自己新创作的诗篇。他的诗声震耳欲聋，吸引了无数人的目光。诗会结束后，李白的诗集立刻名声大噪，销量猛增。从此，李白的名字，也更加响亮地在长安城内传开了。
During the Tang Dynasty, a poet named Li Bai decided to hold a grand poetry gathering to promote his new collection of poems. He sent invitations to famous writers and artists in Chang'an, and even to officials in the imperial palace. On the day of the gathering, Chang'an was filled with people. Li Bai stood on a high platform in gorgeous clothing, reciting his newly created poems. His voice was deafening, attracting countless eyes. After the poetry gathering, Li Bai's poetry collection immediately became famous, and sales increased sharply. From then on, Li Bai's name became even more well-known in Chang'an.
Usage
主要用于形容大规模地进行宣传、活动等，目的是扩大影响。多用于正式场合。
Mainly used to describe large-scale publicity, activities, etc., with the purpose of expanding influence. Mostly used in formal occasions.
Examples
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这次会议，他们大张声势，邀请了各界人士。
zhè cì huì yì, tāmen dà zhāng shēng shì, yāoqǐng le gè jiè rén shì
They made a big splash for this meeting, inviting people from all walks of life.
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公司为了新产品的发布，大张声势地宣传造势。
gōngsī wèile xīn chǎnpǐn de fābù, dà zhāng shēng shì de xuānchuán zào shì
The company has launched a large-scale publicity campaign for the launch of the new product.