{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What functions can be achieved by expansion protocols in blockchain?","a":"Support High Concurrency: The expansion protocol can introduce more nodes to participate in the blockchain network, thereby improving the concurrency  of the system."}]}],"pr":"49974e777eb19eb3503bfc32489aa8cc70fc1abdfbd8afc553414574e4ee85b6"}