sentences:  Around the same time, the imperial scholar Wang Xuandu () had written commentaries for the Confucian classics "Classic of History" and "Classic of Odes", in which he disapproved of commentaries from the Han dynasty scholars Kong Rong and Zheng Xuan.Wang then asked for imperial approval to replace Kong's and Zheng's commentaries with his own, as the official commentaries.Emperor Taizong convened a group of scholars to debate before him, and as Wang was a capable debater, the scholars all could not refute him.