Meaning of zhuāng:
zhuāng
桩
Noun
stump; stake; pile
Gōngrénmen zhèngzài hé biān dǎ zhuāng.
工人们正在河边打桩。
The workers are driving stakes by the river.
Measure Word
classifier for events, cases, transactions, affairs etc
Zuótiān wǎnshàng fāshēng le yī zhuāng qíguài de shìqíng.
昨天晚上发生了一桩奇怪的事情。
A strange event happened last night.