Joke Collection Website - Blessing messages - What is darkness and what are idioms?

What is darkness and what are idioms?

What is darkness and what are idioms:

Shoot and stab in the back,

Play the lute to a cow,

Ups and downs,

Internal strife,

Latent and dark,

Smart and honest,

Push openly and secretly,

HongLing dark system,

Light and darkness,

Dim and dark,

Stealing,

See the small but not the big,

Discard openly and take secretly,