Your story sounds fishy.....

Why would you ship all your belongings here without a signed contract prior to leaving your home? 5000 Euros? I can have a car sent here for that much...

How did you get a proper Z visa without a signed contract?

Did the contract mention free apartment? Oh, you didn't sign the contract....

If there was an outright lie/contract violation why didn't you sue for breach of contract?

So you went home? Jobs are plentiful in China....I can get three offers in one day (all over 10k)...but I have proper qualifications, do you?

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