Indifference or indifference to people.
Animals whose body temperature changes with the ambient temperature. Metaphor means that a person lacks feelings and is indifferent to people and things.
Ruthless, cruel and harsh, without feelings.
Thin heartless: weak. Cowardly and heartless
Heart of jackal fox: a beast. It refers to a cruel, cunning and heartless heart like a jackal and a fox.
Small goodness and small righteousness: small. Describe people as heartless, mean and selfish.
Less kindness and justice: less. Describe people as heartless, mean and selfish.
Lack of affection and justice: less. Describe people as heartless, mean and selfish.
Mean words hurt people, others are heartless.
See from the ruins: meet each other late; Rescue: rescue. Seeing a person facing death threats or difficulties without rescuing him is a metaphor of ruthlessness.
Mean and ungrateful: less. Treat people with ruthlessness.
Autumn grass describes indifference, just like autumn grass that turns yellow every day.