jjkll

GZY also seems to feel trapped in the valley especially now that he is the new SW, and even when he was a kid he always talked about traveling so, the outcome i'm predicting is either GSJ becomes SW and he can leave the valley with YWS or Both gong family and wufeng get destroyed and they are no longer restricted by anyone

I don't think its his dad primarily because the tattoo on the back seems like the reason the whole family is in hiding and the reason as to why the sword wielder cannot leave the valley and it might even be the thing wufeng is searching for. Besides there is a lot of resistance about GZY becoming the SW even though they only suspect him of being illegitimate so, i doubt they would allow a person who randomly showed up to become the SW.(besides the whole system of setting an heir since birth/childhood is there so if he did infiltrate he would have to get rid of all of them without arousing suspicion and be capable enough to be trusted by the elders and the other branches)

But i think the theory of his mother being anonymous would be so cool, because maybe just like YWS she was tricked in to thinking she would get freedom if she completed the mission of marrying the SW but she was trapped there instead.