HSK 6
为止
wéizhǐ动
until; (used in combination with words like 到 or 至 in constructs of the form 到...为止)
到今天为止任务已完成一半。
Dào jīn tiān wéi zhǐ rèn wu yǐ wán chéng yí bàn.
As of today, half of the task has been completed.
Say it
Hold the button, say it, then let go.
Other HSK words sharing a character
Also free:
New in the HSK 3.0 word list at level 6.