An old man stood on the side of the road, looking at the map and then at the street. He may be lost. 

Yangyang immediately walked to the grandfather and asked him where he was going. 

The old man said: "No. 25 Baiyun Street. Do you know how to get there?" 

Yangyang said: "Isn't that next to my house? I'm too familiar with it! 

Go straight ahead from here, turn right at the first intersection, and turn right again at the next intersection, and you'll reach Baiyun Street."