I’m German / Senegalese, my wife is Chinese and we live in Hong Kong. It’s been not been a problem to not have a family network around us but mainly because we are fortunate to have nanny’s and also because our own families aren’t a really supportive to begin with. Our kids are trilingual (Mandarin, German and English). They speak all languages fluently but it was much harder than I thought it would be. German is my mother tongue and yet it took a lot of effort from my side to get the kids to speak it natively. We go to Germany around 1-2 months a year and I speak and read to them in German only. My wife did the same with mandarin and it was just as hard because English is so so dominant. with regards to identification it’s also not easy. We saw that being half Chinese “only”, the Chinese always consider them to be foreigners and always make comments how good their Chinese is as foreigners. In Germany my kids are simply “German” and my kids identify pretty strongly as German. They also identify as Hong Kongers though and also hold the passport. I recommend to travel as much as possible to your home country and read lots of stories in your target language. That helped a lot for us.