code: def start_order_threading(self):
          
  
          self.if_start_orderthreading = True
  
          self.order_handler.if_start_orderquery = True
          self.trade_engine.create_kernel('ORDER', daemon=True)
          self.trade_engine.start_kernel('ORDER')
          self.sync_order_and_deal()
docs: 开启查询子线程(实盘中用)