{"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":"e3ac4091d5a5a5c34c710ffa519eebda035c52a14d8d5d3b416e9dfd9c9c95d5"}