"We All Lie" is a revenge story. Su Li is the main character, a famous writer that basically has the perfect life, but everything changes when she discover that her husband is cheating with her friend. Her rage can't be controlled, so Su Li makes a revenge plan, to make the people who hurt her suffer the same way.

Su Li's plan seemed fun, but since the moment she gets Shu Heng arrested, the drama quality drops completely. Wei De's character is unnecessary and doesn't add anything to the story, it was kind of ridiculous to put a love interest for her so suddenly, when she just lost her baby and with her ex-husband in jail, even that Wei De was planned by Ying Ying.

Subjects don't last one episode, Shu Heng found out too soon about Su Li's revenge plan, I wanted to see her fooling him for much longer, that took the fun out of it.
No comments to the scene that Ying Ying's plan was discover by everyone and she lost her mind and try to stab Su Li with a scissors! HAHAHAHA'

I always loved a good revenge story, but the drama development is flaw, is too rushed, they couldn't really appreciate the story line. The revenge is over so fast, we barely have time to enjoy it.
In conclusion, "We All Lie" was a drama that had some good moments, but lost the change to be better.