留念: to keep as a souvenir, to recall fondly...
宣传: to disseminate, to give publicity to, propaganda...
俊俏: attractive and intelligent, charming, elegant...
无恶不作: not to shrink from any crime (idiom); to commit any imaginable misdeed...
往事: past events, former happenings...
帮手: helper, assistant...
良性: positive (in its effect), leading to good consequences, virtuous, (medicine) benign (tumor etc)...
长城: the Great Wall...
抢救: to rescue...
一鼓作气: in a spurt of energy...