[ yālí ]
This word is literally used to refer to a type of pear grown in the Northeastern province of Hebei but has become an alternative slang word for "stress, burden".
Originally in Chinese the word for 'stress' is 压力 [ yālì ] - note that the lì is a fourth tone - but the pronunciation is still very similar.
What began as simple typing mistakes online soon transferred into common word and many people started using 鸭梨 to refer to mental pressure or stress in spoken language too.
Some netizens have gone on to say that since fruit can be eaten, the stress it represents can be overcome too!