A staffer introduces the westward extension of Shenzhen Metro Line 9 to residents before a test ride at Nanyou Station yesterday. Fifty local residents were invited for the ride on the 10.8-kilometer extension. With 10 stations, the extension runs from Hongshuwan Station through Shenzhen Bay and Qianhai Bay stations before ending at Qianwan Station, an intersection point with Line 5. A whole trip on the extension takes 20 minutes. It is slated to begin operation within the year.Sun Yuchen