{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How should recursive testing be performed in a blockchain?","a":"Implement testing code: Write testing code to simulate the  operation environment of the blockchain system and implement testing of the recursive call function."}]}],"pr":"22ba426c4e814fec02f9cbd7af402e83f910fd13379eaac5f689745aceb15c00"}