This thesis aims to basis the lān-than-hi (or luantanxi in Mandarin) performance in Wu Yuehting’s Graduate Concert, and discuss how differences between the ostentation of Pak-koan’ music (‘Beiguan’ in Mandarin) and drama via the practice in lān-than-hi's. It is also illustrate the application of the music in Hok-lōo-hi and Pān-sian- hi and the music processing mode which adjusts in accordance to the actor/ actress' performance. Finally, this thesis will take for examples in Story of Poisonous Tea, to analyze the differences of the arrangement and melodic patterns.