'Yan Vietnamese a lokacin daular Lý sun yi babban yaki daya daSong Sin , da kuma wasu 'yan yakin neman zabe kan makwabciyar Champa a kudu.^{[138 <>]} Wani rikici mafi shahara ya faru a yankin Guangxi na kasar Sin a ƙarshen shekara ta 1075. Bayan da aka sami labarin cewa an kusa kai wa waƙa hari, sojojin Vietnam da ke ƙarƙashin jagorancin Lý Thường Kiệt, kuma Tông Đản sun yi amfani da faya-fayen faretin don lalata gine-ginen sojan Song guda uku. a Yongzhou, Qinzhou, da Lianzhou a Guangdong da Guangxi na yanzu.Daular Song ta dauki fansa kuma ta mamaye Đại Việt a shekara ta 1076, amma sojojin Song sun kasance a baya a yakin Như Nguyệt River wanda aka fi sani da kogin Cầu, yanzu a lardin Bắc Ninh kimanin kilomita 40 daga babban birnin yanzu, Hanoi.Babu wani bangare da ya iya tilasta yin nasara, don haka kotun Vietnam ta ba da shawarar sasantawa, wanda Sarkin Song ya yarda.^[139]