I have no input on the specific cultural issues (with respect to China), but in general, yes, you can and it may help to write a letter of explanation and it may be persuasive or at least help the examining officer understand unusual aspects. I personally think the pregnancy and coronavirus parts of your explanation are quite strong reasons to have gone for a civil or more low-key wedding. They are both at least reasonable explanations. That said, the expectations about other aspects (time spent together, photos, chat/call histories, etc) may be a bit higher (in the absence of other evidence).Yea great, I will definitely add that to my application. To keep face, family wants a civil one instead now in august since tummy will be big. A more formal celebration was supposed to happen in March or early April but of course of the virus NO one, even in China is going to attend.
Yea at 33 female and single is like a lost cause for parents. Should I mention this too on the application? Also no dowry will be given to her family because of the difference in cultures.
Are the immigration officers in tune with Chinese culture?
As for immigration officers: of course not all are completely knowledgeable but at least in the regional offices (within embassies) they learn quickly with exposure and have a lot of local staff of whom they can ask questions. This is for all aspects of the background checks as well.
Note that of course they make 'adjustments' in expectations and level of risk based on the entire application. An arranged marriage (for cultures in which common) presents a different case and expectations than, say, a fully 'secular' cross-cultural pair that met at graduate school in Western europe or USA or professionally or something.