{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the key events triggered by the blockchain upgrade module?","a":"Node upgrade: After the upgrade initiation, each node  will perform a local upgrade based on the received upgrade package. This process may involve code refactoring, function optimization, performance improvement, etc."}]}],"pr":"743ae7682a86a9a24e9d667f1da929e5d86c6d6e686f475a83ad25090ad04eb0"}