Hello! These are the thing I still remeber: -The MC was chased and ended up in a forest ( I think he was injured) there he was taken care by the ML who was crippled. They lived in a little cabbin (I think???) -Then the one who wanted MC dead found him and turned out to be ML son. ML family business was big or something. -MC died but had a second chance and rertuned to the past. Saved the ML from car accident and later married him. Some more things: -when MC and ML where in the cabbin, MC fell in love with the ML. -I think MC was originally in love with the son but was betrayed. -at first when MC offers ML the offer of marriage it seems like a business deal.
I think you're talking about The second wife (豪门老男人的二婚男妻) ML's son was MCs bf who betrayed him but he turns out to be not blood related to ML at the end though.