Zhang Yu was being honest and direct with the foreigner.
B.
Zhang Yu likes to make friends with foreigners.
C.
Americans are not used to being approached by strangers to engage in conversations. Although Zhang Yu explained he simply wanted a chance to practice his English, Edward was still mistrustful, thinking Zhang Yu might turn out to pose some sort of problem.
D.
Zhang Yu was not particularly interested in knowing the person but only in the language he spoke.