比喻人离开后，人们对他的态度就冷淡了used as a metaphor for people's attitude towards something cooling once one leaves; the person leaves and the tea is cold

• 如何让“碳税”摆脱人走茶凉的命运，是当局者的远虑。

  How to save the carbon tax from the fate of falling out of favour once they leave office should be a long-term consideration of the authorities.