{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to cancel derivative market orders?","a":"Log  in to the derivative market trading platform: First, you need to log in to the derivative market trading platform, such as futures exchanges, options exchanges, etc."}]}],"pr":"5a210c65087afbd1edc056f100e66a65e9fc2a0aa442e35a910f1bd85b0e06f1"}