Traveling to the world of Naruto, Wen Yan only does three things.
Copy ninjutsu, copy ninjutsu, or fucking copy ninjutsu.
Kakashi: How about a ninja test? I am not worthy, Wen Yan is.
Sandaime: I admit that he is the doctor of ninjutsu.
Uchiha Itachi: Do you really have no blood of the same clan? Who among the common people knows Susanoo?
Tsunade: Big Buddha? I think I saw my grandpa.