《新五代史·列传·杂传第三十四》
王晏球攻打定州，很久没有攻克，唐明宗多次派人催他破贼，王晏球认为不能急攻。
晏球攻定州，久不克，明宗数遣人促其破贼，晏球以谓未可急攻。
Wáng Yànqiú attacked Dingzhou, and failed to capture it for a long time. Táng Míngzōng sent people to urge him to defeat the enemy many times, but Wáng Yànqiú believed that he could not attack rashly.