Hi! sister
I read two of your posts and you have wrote that you can't go to London because they don't give you Visa to go there...
If this boyfriend/husband really loves you since you can't obtain a visa then maybe tell him to visit you instead, in China.
I can feel that you really love this man and I hope he loves you the same... talk to him what's the best for both of you... see him in your country or see him in London... See what's convenient for both of you.
But if he is lost or missing please tell the authorities since you can't go there...go to the British embassy... Just my thoughts...
God bless ❤