{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the steps involved in upgrading a blockchain?","a":"A4Code Modification and Optimization\uff1aAccording to the upgrade plan,  the underlying code of the blockchain is modified and optimized. This may include improving the consensus algorithm, increasing the transaction processing speed, and enhancing network security."}]}]}