{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the specific steps to follow for a blockchain upgrade?","a":"Solution design: According to the requirement analysis, design the upgrade  solution, including technology selection, module optimization, function expansion, etc."}]}],"pr":"ea00adbfe4e5d284954f3caac7c0fa7c97c33d596c04399d55ef3d069d3804f6"}