When the Shiwei requested to ransom the hostages , Zhang refused their payments -- .
When the Shiwei requested to ransom the hostages , Zhang stated that he would return the hostages as soon as the Shiwei also killed Huigu emissaries to them .
When the Shiwei requested to ransom the hostages , Zhang refused their payments -- and stated that he would return the hostages as soon as the Shiwei also killed Huigu emissaries to them .