HSK 6
以便
yǐbiàn连
so that; so as to; in order to
请留下电话以便我们联系。
Qǐng liú xia diàn huà yǐ biàn wǒ men lián xì.
Please leave a phone number so that we can contact you.
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.