True of fake story, it is an experience that some will go thru in relationships, and when shared, it may help others to share as well, offer perspectives and for readers to discern and decide for themselves in building relationships, than to destroy relationships.
A) During my NS, it was an absolute traumatic shock in BMT. We all came from different backgrounds, had differences and desires. There were no maids to make our beds, clean up after us, etc. Some were uncouth, and when they lack words to express themselves, they express such with fists. Arguments and fights broke out when the lights were mandatory turned off at 2359hrs....
However, thru harsh and hard military training, we all managed to work together thru better understanding of each other, to attain a goal - to survive BMT. Patience and tolerance played a critical part, as regardless rich or poor, educated or not, we had make our own beds, clean the toilets and grounds, unsoiled our rifles, wash our own uniforms, slept in 2 man tents while on jungle training, dirty, smelly, loudly snoring away, mosquitoes bites, bear the rain flooding inside our tents, etc, etc.
It was a culture shock to all of us, but it was a good experience, for males during our important NS, to come down from their ivory towers or rise up from the slums, to gain better understandings of each other and how to work together to attain goals in life.
Your BF too would had served NS. Thus share my experiences with him, to help him understand how you feel, as it is something that he can relate to and be the better bridge between you and his family. It is about COMMUNICATIONS, to build better relationships, than to hide feelings inside which will only come to boil as each Human will have their own limits, which will tear asunder a relationship which could had been beautiful....
B) Based upon your descriptions of your BF's father, he probably had been brought up in the Chinese Traditional way - ancestral worship, Taoism beliefs, male supremacy, respect for elders, etc. As he owns a 3 rm flat as compared to your father, his earnings may not much, nor the educational levels, even opportunities to mix with high society or higher mgmt levels to blunt his uncouthness.
However, that does not mean that he is stupid or a bad father, PROVEN by the 3rm flat he owns, the hard work he put in over years to BUILD UP a family, and especially more evident that he can groom up a kid that is super hardworking, talented and responsible enough, respect his father and his family as well as yours, for you to fall in love with and desire as a partner in life.
Thus, you will have to define your own goals - You may be married to your BF's family, but it is his son that you marrying and spending your life with.
Talk and communicate with your BF, set an ideal time and not during petty quarrels, which are only common, to let him know that you do not appreciate his father's perhaps misunderstood poor expressions of his welcoming of you.
Also, you are not expected to live in his 3rm flat as it is probably already too small, and you both would had BTO already to find a space of your own. The only times you will get to visit his family is probably on weekends or special festive occasions which are few in out of 365 days a year. Tolerance, communications and patience will win out in the end to build a better relationship.
All the best to you and your BF. Happy Chinese New Year to all.