"Drink poison to quench thirst" means: drink poisonous wine to quench thirst. Metaphor regardless of the serious consequences, with the wrong way to solve the immediate difficulties. Silver carp is a legendary poisonous bird, and the wine soaked in its feathers can kill people.

"Looking at plums to quench your thirst" means that plums are sour, and people will salivate when they see plums, thus quenching their thirst, which is a metaphor for not realizing their wishes and comforting themselves with fantasies.

Although both words have the word "thirst quenching", there is no practical connection. "Quenching thirst by drinking poison" refers to solving immediate difficulties with wrong actions, and "Quenching thirst by looking at plum blossoms" refers to daydreaming, who is idle and does not take practical actions.

Make sentences:

Drink poison to quench thirst: In today's commercial times, manufacturers only rely on price reduction to attract consumers, which can only be a means of drinking poison to quench thirst.

If you don't concentrate on your studies and just want to take shortcuts, I'm afraid it's no use looking at plums to quench your thirst.