{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does the blockchain injection and version upgrade process work?","a":"Code Writing：On the basis of planning and design，write the underlying code of the blockchain. This  includes writing smart contracts，client programs，node programs, etc., to ensure the cooperative work between various components."}]}],"pr":"873826400c7ca70951cb0eaf7705abdd01445431033232e392a4c30c45e2c4b9"}