至 + Time/Place
至 (zhì) means "until" or "up to," indicating an endpoint in time or space. It is more formal than 到 and frequently appears in written Chinese. A common usage is 至今 (zhìjīn), meaning "up to now" or "to this day."
这场雨从早上一直下至傍晚才停。
zhè chǎng yǔ cóng zǎoshang yìzhí xià zhì bàngwǎn cái tíng.
The rain kept falling from morning all the way until evening before it stopped.
这个传统至今仍然保留着。
zhège chuántǒng zhìjīn réngrán bǎoliú zhe.
This tradition is still preserved to this day.
展览时间为九月一日至十月三十一日。
zhǎnlǎn shíjiān wéi jiǔ yuè yī rì zhì shí yuè sānshíyī rì.
The exhibition runs from September 1st to October 31st.