Vocabulary consisting only from characters you are able to read
山
やま
mountain, pile, heap, climax, critical pointjlpt5, shizen
九日
ここのか
nine days, the ninth day (of the month)jlpt5, toki
緑の日
みどりのひ
(n) Greenery Day (national holiday; May 4)namae, toki
急に
きゅうに
(1)swiftly, rapidly, (2)suddenly, abruptly, immediately jlpt3, mix