《太平广记·卷八十四·异人四》
在唐朝的会昌与开成年间，含元殿要更换一根主柱，皇上命令右军负责采伐和制作，要选择合乎尺寸的木材，军司们下到周至一带的山场，整整一年也没采伐到这样的树，便悬重赏广泛征求。
会昌开成中，含元殿换一柱，敕右军采造，选其材合尺度者。军司下周至山场，弥年未构，悬重赏。
During the Huichang and Kaiyuan years of the Tang Dynasty, the main pillar of the Hanyuan Hall needed to be replaced. The Emperor ordered the Right Army to be responsible for harvesting and making it. They needed to select timbers of conformable dimensions. The army officers went to the mountains around Zhouzhi but did not harvest such a tree for a whole year. So they offered a great reward hoping to obtain one.