{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"In the lifecycle of the Peggy Bridge, which steps are necessary?","a":"Design stage: At this stage, engineers and relevant teams conduct preliminary design of the bridge, determining the type, structure, materials, and construction technology  of the bridge. At the same time, considerations should be given to the functionality, aesthetics, and safety of the bridge."}]}],"pr":"d0c2a67080ffc84c44f2c9b97829551523c1c3550d70ff92020b559107eac84d"}