 Knowing this, Liu Yan wanted to comfort him, and therefore forged a letter in his handwriting style and sent a secret messenger to Luoyang to summon Zhao Sun and another son (Zhao Sun's brother) Zhao Yi (趙益) to Southern Han, and Zhao Sun and Zhao Yi subsequently took their families and went to Southern Han.Their arrivals was a pleasant surprise for Zhao Guangyi, and it was said that thereafter he wholeheartedly served Liu Yan.Zhao Sun himself rose in the ranks of the Southern Han imperial government, eventually becoming chief imperial scholar (翰林學士承旨, "Hanlin Xueshi Chengzhi") and "Shangshu Zuocheng" (尚書左丞), one of the secretaries general at the executive bureau of government (尚書省, "Shangshu Sheng").