The first step is to gain the trust of the butterflies. Tsai will first spend some time in the general environs, making exaggerated arm motions so that the butterflies become acclimated to his presence and see him as simply part of the environment. At the same time, Tsai closely observes the butterflies 'movements.
拍蝶第一步，就是取得蝶兒的信任；他會先花一段時間在蝶附近，誇張並重覆地擺動雙臂，讓蝶習慣自己的存在，將自己視為環境的一部份，同時仔細觀察蝶的動作。