In fall 431 , however , he sent messengers to Northern Wei to declare his loyalty and to indicate that he was willing to deliver Helian Ding to Northern Wei .
Murong Mugui did not kill Helian Ding initially .
In fall 431 , however , Helian Ding sent messengers to Northern Wei to declare Helian Ding 's loyalty and to indicate that he was willing to deliver Helian Ding to Northern Wei .
Murong Mugui did not kill Helian Ding initially .