之所以

HSK 6

zhīsuǒyǐ

because of; for the reason that

Examples

之所以...是因为

zhīsuǒyǐ...shì yīnwèi

The reason why...is because

之所以成功

zhīsuǒyǐ chénggōng

The reason for success

之所以如此

zhīsuǒyǐ rúcǐ

The reason why so