Progress in Chinese starts with characters, then words, finally idioms. Here’s a free look at 「不知所出」 and its explanation.
The Chinese idiom 「不知所出」 we’re introducing today is explained in detail below, along with its meaning and usage.
①I don’t know where it came from. ②I don’t know what to do.
The Mandarin pronunciation of this idiom is :
bù zhī suǒ chū
while its Cantonese pinyin is :
bat1 ji1 so2 cheut1
Chinese idioms come in large numbers, with diverse meanings and usages, offering endless learning opportunities. We hope these resources make it easier for you to study Chinese.

