笔下留情

duì yú fǎn dòng pài lǔ xùn shì cóng lái bù jiǎng shén me bǐ xià liú qíng de

对于反动派，鲁迅是从来不讲什么笔下留情的。

In his writing, Lu Xun was never sparing in his criticism of the reactionaries.