Seek for help, you can open a tik tok account or other social media platform that are like TikTok, I said this because j heard it's banned in China, maybe not anymore? Upload your current situation and that of your brother, with video and proof, seek help from those streaming your video, open a gofundme account or other, you will get a lot of helper responding to your problem, I can be one of them, if you can provide prove that this is really happening to you, don't be shy about it, this could be a good way to save your brothers life, I have seen few people doing this online, especially on TiK ToK and they get help.
Forget Bitcoin for now and take my advice, Bitcoin is a long term investment plan and I don't want to see you lose your brother.
right, in essence Bitcoin is not an investment that can make us rich quick or multiple profits overnight. i think the OP just don't wasting time hoping for Bitcoin right now to help with the medical expenses of OP's brother.
the suggestion from KiaKia is a good idea and there's no harm in trying it, i think the application name is Douyin app, a platform that is often used for live streaming in China like TikTok.
i was also thinking the same thing why not just do a live stream to collect donations, because mostly i see Chinese people live streaming right? even that can provide the same income as work.
there's no harm in trying this, maybe it can help a little more or maybe it can be a good way to earn money and can help with the treatment of OP's brother.