For this reason / to this end (为此)

Structure … (prior fact / goal)，为此 + action taken

为此 (wèicǐ) is an anaphoric written-register connector: the 此 ("this") picks up what was just said, and 为此 frames it as the cause or purpose of what follows — "for this reason / to this end". 他想出国，为此努力学了三年英语 = "he wanted to go abroad; to that end he studied English hard for three years". It covers two shades depending on context: purpose ("in order to achieve that") and cause ("as a result of that"). Here 为 is read wèi (fourth tone), not wéi. It is the formal, condensed equivalent of 为了这个 or 因为这个; it opens the second clause and is usually followed by an action verb.

Examples

他tā想xiǎng出chū国guó，为wèi此cǐ努nǔ力lì学xué了le三sān年nián英yīng语yǔ。
He wanted to go abroad; to that end he studied English hard for three years.
公gōng司sī业yè绩jì下xià滑huá，为wèi此cǐ召zhào开kāi了le紧jǐn急jí会huì议yì。
The company's results declined; for this reason an emergency meeting was called.
他tā立lì志zhì从cóng医yī，为wèi此cǐ付fù出chū了le多duō年nián努nǔ力lì。
He resolved to become a doctor and, to that end, put in many years of effort.
此cǐ事shì影yǐng响xiǎng重zhòng大dà，特tè为wèi此cǐ致zhì歉qiàn。
The matter has great impact; we hereby offer our apologies for it.

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.