What this is
These are are all idioms or proverbs in a broad sense, but not all would be recognised as chengyu in standard dictionaries. On Pleco, the definitions for most of them should exist and you may often see them having the tags "IDIOM", "WELL-KNOWN PHRASE", “COMMON PHRASE", "COLLOQUIAL"...
It would be great if there somehow was possible to browse or search for idioms. Perhaps you could create a separate tab for idioms on the character page showing idioms containing that character, or maybe even just a separate list under the sentences tab.
Thank you.