HSK 5
Zhège jìhuà zhíxíng de yánsī-héfèng.
The plan was executed flawlessly.
HSK 7-9
Liǎng kuài mùbǎn pīn de yánsī-héfèng.
The two boards fit together perfectly with no gaps.
HSK 7-9
Tā de zhèngcí yánsī-héfèng, zhǎo búdào pòzhàn.
His testimony was airtight. No holes to be found.
