没影的事。(Méi yǐng de shì.)groundless information or hearsay.

Explanation

“没影的事” 一般指还没有结果的事，现多用来比喻没有根据的消息和传说。
“没影的事” refers to things having no result yet. Now it is a metaphor of the groundless information or hearsay.
Words:

瞎说xiāshuō:nonsense;
谈恋爱tán liànài:be in love.

Sentences

1.Jiă: Háojiŭ bú jiàn! Tīngshuō nǐ zhòng le wǔbǎi wàn?
甲：好久不见！听说你中了500万？
A: I haven’t seen you for long time. I heard you have won RMB 5,000,000.

Yǐ: Xiāshuō, méi yǐng de shì. Yàoshì yǒu wǔbǎi wàn, wǒ zăo jiù gēn nǐ shuō le.
乙：瞎说，没影的事，要是有500万，我早就跟你说了。
B: Nonsense! It is a rumor. If I have 5,000,000, I have already told you.

2.Jiă: Wăngshang shuō nà liăng gè míngxīng zài tán liàn’ài, shì zhēnde ma?
甲：网上说那两个明星在谈恋爱，是真的吗？
A: People on the internet said the two stars were in love, is it true?

Yǐ: Dōushì xiē méi yǐng de shì, nǐ búyào xiāngxìn.
乙：都是些没影的事，你不要相信。
B: All are groundless rumors and you should not believe.