If you're talking about why he doens't know wen saved him it's because shen made it look like he saved him and wen couldn't saying anything because wen got kidnapped trying to save gu from the kidnappers
The frick why yansheng doesnt know
Because gu was young and confused and he couldn't tell who saved him since wen wasn't there but shen was and shen was the one at the hospital so it looked like shen saved him not wen.
Dam shen n also yansheng why u so stopid ヾ(╯°Д °)╯╧╧
Why did they marry each other? Is fixed marriage?
Is it*
Yes
Oh okay thank you, now I know.
I don't understand, did the seme had an amnesia?