ask the way from a blind person—seek advice from one who can offer none; ask advice from an ignorant person
❍ 但只问着晚生，便是“～”了。(《儒林外史》104) Asking me about it is like asking the way from a blind man.
问道于盲wen dao yu mang
ask the way from a blind person—seek advice from one who can offer nothing
问道于盲wèn dào yú mánɡ
盲：瞎子。向瞎子问路。比喻向一无所知的人求教。seek advice from one who can offer none, ask a blind man the way