《新唐书·列传·卷四十九》
玄宗在东宫，兼右庶子。
玄宗在东宫，兼右庶子。
Cui He and Zheng earlier oversaw the selection of candidates, but they were interfered with and bullied by the powerful relatives and imperial ministers, which led to the overuse of the following year’s quotas. Still unable to satisfy their desires, they set up a winter selection, leading to a flood of redundant officials. Song Hao, along with the Vice Ministers Li Yi and Lu Congyuan, reformed the management of officials and made the selection of candidates fair.