Question: If a passenger starts from the "Convention and Exhibition Center" station on Line 4, what is the minimum number of stops required to transfer to "Meicun" station? Answer only with a number (e.g.: 4)
Clues:
1. The "Convention & Exhibition Center" station is on the red line (Line 4).
2. The "Meicun" station is on the brown line (Line 9).
3. The "Shangmeilin" station is an interchange connecting the red line (Line 4) and the brown line (Line 9).
Answer: 1
Category: Transportation and Travel