image source Here

谚语, 成语 and 歇后语

Scratching an itch from outside the boot.
隔靴搔痒 (Gé xuē sāo yǎng)

There are always ears on the other side of the wall.
隔墙有耳 (Gé qiáng yǒu ěr)

Flowers look different in different eyes.
各花入各眼 (Gè huā rù gè yǎn)