Resident visa but passport has less then 6 months validity... Cn I travel and get back into china?

Hi folks, I live here with my boyfriend, and we both have resident permits here in china. We tried to travel to vietnam last night but they wouldn't let us because my boyfriends passport ha less than 6 months validity. No we e are trying to go the US, and am wondering if well have problems getting back INTO china, we are US citizens, please HELP!!!! It is CNY sI the embassy is not open for us to go ask and we want to leave tonight"