How many kilometers is it from Yutian Yahongqiao to Zhengzhou North Service Area in Henan Province?

There is no Yahongqiao service area. Your relatives must be talking about Yutian service area, which is only 5 kilometers away from the exit of Yahongqiao. It's an old service area, but the Yahongqiao exit was newly opened after renovation (it was almost the same when it passed a month ago, so it should be open). I'm afraid you misunderstood!