Meaning:
“中国人” means “Chinese people,” and “不骗” means “don’t cheat or lie to.” Literally translated as “Chinese people don’t lie to their countrymen,” this sentence became a catchphrase in November ahead of the annual Singles’ Day online sales campaign in 2021. It reportedly started during a conversation between a taobao.com shopkeeper and a potential buyer who asked the seller to say this sentence as a guarantee that the merchandise was up to par with the descriptions online. Apart from scenarios where a seller promises authenticity and quality of their goods, the sentence is also used jokingly when someone tries to guarantee the authenticity of a piece of gossip.
Example:
A: 丽丽真和她男朋友分手了吗？我上周末还看到他俩一起看电影。
Lìlì zhēn hé tā nánpéngyou fēnshǒu le ma？Wǒ shàngzhōumò hái kàndào tāliǎ yīqǐ kàndiànyǐng。
Has Li Li really broken up with her boyfriend? I saw them together at a movie last weekend.
B: 千真万确，中国人不骗中国人。
Qiānzhēn wànquè，zhōngguórén búpiàn zhōngguórén。
That is 100 percent true, I promise.