does the subject want to ask "which line should I take from People's Square to Yaohan subway"? Lines 2 and 9. According to the Baidu map, the journey from People's Square to Yaohan is about 6.9 kilometers. First, take Metro Line 2 from People's Square, after four stops, arrive at Century Avenue Station, then take Metro Line 9, after one stop, arrive at Shangcheng Road Station, and walk for about 31 meters to reach Yaohan. Yaohan, located in Zhangyang Road, Pudong New Area, is a large Japanese chain retailer that has closed down.