{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can communication overhead be reduced in a blockchain network due to sharding?","a":"Adopt Directed Acyclic Graph (DAG) structure: By organizing transactions in a block into a DAG structure according to certain  rules, the communication overhead between shards can be effectively reduced. In this structure, nodes"}]}],"pr":"81e1a6643c8b3a10429c4af36a379e3b044d7d00cd9588c5e5c6d07bc4364178"}