Zhè jiā chāoshì zhèngzài gǎo cùxiāo huódòng.
This supermarket is having a sales promotion.
Shuāng shí yī shì Zhōngguó zuì dà de cùxiāo rì.
Singles' Day (11/11) is China's biggest sales promotion day.
Cùxiāo jià bǐ yuánjià piányi yībàn.
The promotional price is half the original price.