{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"The development of blockchain is rapid, but how can we ensure that new versions will not affect the applications and tools developed by existing developers?","a":"Clear documentation and tutorials: Provide detailed  documentation and tutorials for the new version to help developers quickly understand the changes and features of the new version, thereby reducing the migration cost."}]}],"pr":"e37b7bd6fa0f1bf146124dd91ce26f3b13f1ff5621421857fea24f72dbf9a1e1"}