From Los Angeles Times:

For avid fans, the hit series is a rare taste of urban realism: must-see TV, Chinese-style.

The weekly show “Wo Ju,” or “Snail House,” has wowed young audiences with its racy dialogue and themes that lampoon China’s skyrocketing home prices, sleazy developers and corrupt party officials.

Set in a fictional city resembling Shanghai, the drama focuses on two sisters who become fangnu, or mortgage slaves, desperately struggling to pay their bills in a country where 85% of the population is priced out of the housing market.

See also this Danwei post.