Ghostly Female Ghost? No, It's the Koi Little Wife

[Single female protagonist + no system + sweet text + dog food + daily life + fictional history + fatalism] Zheng Cai, who had just been broken up with, carried out an inexplicable ghost marriage ceremony according to his grandfather's request. I originally thought that this was just a matter of dealing with the old man, but what I didn't expect was that from that day on, a girl who looked exactly like the ghost marriage partner suddenly appeared in my life. Before I had time to be scared, why did I feel that this girl was not only stupid but also a bit in vain? "Zheng Cai, are you considered a candidate? It's okay, I'm yours too." "Can you give me a royal life and come back? Oh, there is no royal life, it's okay. As compensation, you can just stop taking concubines!" "Can't you go out and accompany me today? It's okay. I seem to have a lot of money. I'll support you." "What two families are talking about? Aren't we both already married?" Looking at the beautiful face in front of him, Zheng Cai wondered why his life was not getting better!