I looking for a manhwa I forgot its name. It's a historical bl. The ml is a giant black sn...

I looking for a manhwa I forgot its name. It's a historical bl. The ml is a giant black snake and mc is a commoner. Mc was looking for his dead mother's ring when he found ml who made him his slave. The mc wanted to marry someone the ml pretend to be a widow for another village and married mc. That's all I remember. Did it stop updating?