Dàcù kuài kāishǐ le, nǐ liè hǎo gòuwù qīngdān le ma?
The mega sale is about to start - have you got your shopping list ready?
Tips
usage
Modern e-commerce shorthand for 大促销 - used as a generic label for any flagship sale. Routinely combines with date markers: 双11大促, 618大促, 年中大促. In headlines and app banners 大促 is far more common than the full 大促销.
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Originally trade jargon, now mainstream after a decade of Tmall / JD push-notifications. Casual texting; you wouldn't write 大促 in a formal commercial contract - there 促销活动 (promotional event) is the safer term.