Before attacking, however, he sent an envoy to Goguryeo's King Yuri, ordering him to send a royal hostage to Dongbuyeo. Goguryeo rejected the order leading to the first Goguryeo-Dongbuyeo war to occur in 6 AD.
Before initiating an attack, he dispatched a messenger to Goguryeo's King Yuri, asking for a royal hostage from Dongbuyeo. Goguryeo's refusal of this request triggered the initial conflict between Goguryeo and Dongbuyeo in 6 AD.