Before they even landed in Taiwan, Weidenhofer and Payne, who work for Artlab Australia, Down Under's biggest restoration center, had already conducted tests on fragments Pottman had brought them, determining the composition of the paints used in the mural and finding suitable detergents. Still, they were very careful here, spending two weeks to repair just one wall of murals.
來自澳洲最大古物維修中心「藝術工作實驗室」的韋登霍夫和潘恩，在抵台之前已經在實驗室對佩特曼帶回的碎片樣本做過測試，找出壁畫的顏料材質與適用的清潔劑，不過他們仍然很謹慎，一面壁畫花了兩周才完成清潔及修補。