Thus, even if Gaozong wanted to recover the lost territories, he couldn't afford it financially; the cost of rebuilding the Song's northern territories would have risked bankrupting the south. In addition, with the southern part of China remaining under Song control, the transport of goods became more cost-effective by boat via the streams and camels criss-crossing the region. It also eliminated obstacles to trades, allowing traders to import goods between Song and Jin territories. Qin Hui, in a reply to Gaozong's gratitude for the success of the peace negotiations, told the emperor that "the decision to make peace was entirely Your Majesty's. Your servant only carried it out; what achievement was there in this for me?" Emperor Gaozong was also a notable poet and had significant influence on other Chinese poets. Among his surviving works is the Quatrain on Heavenly Mountain. In 1161, the ruler of the Jin Dynasty, Wanyan Liang, wishing to unify China under his regime, declared war on the Song in the Battle of Tangdao and the Battle of Caishi. The Jin lost the war. An important consequence of this was to remove Song's status as a vassal state, although it still had to pay tribute. Wanyan Liang was assassinated shortly afterwards, when many Jin officers rebelled as a result of the Jin defeat. As Retired Emperor In 1162, after reigning for more than 35 years, Emperor Gaozong abdicated. Because his only son, Zhao Fu, had died of illness around the age of two, Emperor Gaozong passed the throne to his adopted son and distant cousin Zhao Shen, who then became Emperor Xiaozong. Emperor Gaozong's handling of the Battle of Caishi with Wanyan Liang may also have contributed to his decision to retire. In retirement he assumed the title of Taishang Huang ("Retired Emperor") and retained some power until his death in 1187. His death saddened Emperor Xiaozong and caused him to abdicate only two years after Gaozong's death. One of his era names, Shaoxing is a name for a city, Shaoxing. Family Consorts and Issue: Empress Xianjie, of the Xing clan (; 1106–1139), personal name Bingyi () Empress Xiansheng, of the Wu clan (; 1115–1197) Noble Consort, of the Zhang clan (张贵妃, d.1190) Worthy Consort, of the Zhang clan (張賢妃 張氏, d. 22 March 1147) Worthy Consort, of the Liu clan (劉賢妃 劉氏, d. 1187) Worthy Consort, of the Pan clan (; d. 1148) Zhao Fu,