While this was going on , in spring 902 , Zhu launched a surprise attack on Huguo , and as part of the campaign quickly took control of the only viable path between Hedong and Huguo .
Li Keyong could not come to Wang Ke 's aid .
While this was going on , in spring 902 , Zhu launched a surprise attack on Huguo , and as part of the campaign quickly took control of the only viable path between Hedong and Huguo , so that Li Keyong could not come to Wang Ke 's aid .