He had to find a few other leaves, and from the relative data find his way to the main branch, and draw the branch as accurately as possible to complete the family tree.
因此，他必須試圖去找到許多可以溯得枝幹的葉子，並從所有相關資料中，將枝幹儘量畫到最細，以期重組一棵完整的家族樹。