列举唐代时，唐蕃之间友好交往的三个史实。
唐太宗把文成公主嫁给松赞干布；唐中宗派金成公主入藏嫁给尺带珠丹；821年唐蕃结盟。
—Yes. My grandfather was one of them. He went there in his .
9×(25－18)=62
