Li believed that although this operation mode is somewhat like a brief case operation , it can help those accounting firms which cannot afford to establish a mainland branch themselves to explore the mainland market at lower costs 李家祥认为,这种类似皮包公司的运作模式,有助一些没有能力在内地开设分店的会计师行,以较低廉的成本,租金开拓内地市场。