Therefore / consequently (因而)

Structure Cause，因而 + consequence

因而 (yīn’ér) links a cause to its consequence, like a formal "therefore": 他准备得很充分，因而很顺利 = "he prepared thoroughly, and therefore it went smoothly". It’s the logical conclusion of what precedes. Similar to 所以 but more formal and written; it doesn’t need a preceding 因为.

Examples

他tā准zhǔn备bèi得de很hěn充chōng分fèn，因yīn而ér很hěn顺shùn利lì。
He prepared thoroughly, so it went smoothly.
价jià格gé太tài高gāo，因yīn而ér卖mài得de不bù好hǎo。
The price was too high, so it sold poorly.
他tā经jīng验yàn丰fēng富fù，因yīn而ér很hěn受shòu欢huān迎yíng。
He’s very experienced, so he’s in high demand.

Levels are indicative: they follow the standard Chinese Grammar Wiki (AllSet Learning) progression, not an official HSK 3.0 mapping. We never assign levels by eye.

This point and the other 370, with audio on every example, inside Wanyu.