HSK 7-9
崩溃
bēngkuì动
to collapse; to crumble; to fall apart
系统因访问量过大突然崩溃。
Xì tǒng yīn fǎng wèn liàng guò dà tū rán bēng kuì.
The system suddenly crashed because of excessive traffic.
Say it
Hold the button, say it, then let go.
Also free:
Appears across levels (7-9) in the HSK 3.0 word list.