"사신으로 들어가 조공을 한" => who visited (Sui) as an envoy to pay tribute. * Sui: name of the Chinese kingdom. * 사신: envoy, diplomat. * 조공: tribute (a country pays respect/dues to a larger one in return for protection). 정벌의 출병 기일을 물었다 => inquired the date of the planned expedition for conquering (Goguryeo). * 정벌: military campaign to conquer a country. * 출병: sending of the troops; expedition. * 기일: scheduled date. * Goguryeo: name of an old kingdom on the Korean peninsula. 인물로는 삼국사기 백제본기 권5에 611년(백제 무왕 12)에 수나라에 사신으로 들어가 조공을 한 국지모(國知牟)가 고구려 정벌의 출병 기일을 물었다는 기록이 보이며, 고려 태조 원년에 원외랑(員外郞)을 지낸 국현(國鉉)이 있었다. => For notable figures, there is a record of Gug Ji Mo in Book 5 of the Baekje Chronicles of Samguk Sagi, who is said to have inquired the date of planned expedition for conquering Goguryeo when he visited Sui to pay tribute in 611 (12th year of King Moo of Baekje), as well as Guk Hyun who served as Wonwoerang in the first year of the founding king Taejo's reign in Goryeo dynasty.