插: stick into; insert...
元首: head of state...
交谈: to discuss, to converse, chat, discussion...
渊源: origin, source, relationship...
小心翼翼: cautious and solemn (idiom); very carefully, prudent, gently and cautiously...
权益: rights, interests, rights and benefits...
中年: middle age...
围绕: to revolve around, to center on (an issue)...
挂念: concerned...
报仇: to take revenge, to avenge...
