It's a really difficult situation. If your husband is ok with his job and has made his mind (if he plans to stay in Greece) then I would go with him. Of course it woud be really hard for you because you would have to quit your job, your country and everything just to follow him and be with him. You would have to move to another country, learn another language and so on.
However, you should think of the advantages and disadvantages of doing so. For example, if you stayed in China while he was in Greece, would you be happy there? You would be alone, without your husband, and he would be alone, too. And a marriage cannot work if the couple is separated.
Meeting a new culture and learning a new language is a really rich experience, though. Think of it just like this: a whole new world whose doors are now opening just before you.
Good luck, Violent, and let us know about your decision. Just follow your heart and search for happiness