《隋书·列传·卷三十二》
炀帝又命令裴矩前往张掖，引导西域蕃邦入朝贡献，到朝廷贡献土产的有十多个国家。
帝复令矩往张掖，引致西蕃，至者十余国。
Emperor Yang ordered Pei Ju to go to Zhangye to guide the vassals of the Western Regions to pay tribute to the court. More than ten countries came to the court to pay tribute to their local products.