不料 (bú liào): Unexpectedly (Conjunction) — Meaning & Stroke Order

I originally planned to go hiking today, but unexpectedly it suddenly started raining heavily.

He originally intended to handle this matter discreetly, but unexpectedly, the news still spread quickly.

Unexpectedly, how did this seemingly simple decision provoke such a big controversy?

I was just about to go out, but unexpectedly, my phone ran out of battery, so I had to charge it first.