Cargoes varied from one voyage to another but often included goods from all over Asia - jade, wax, gunpowder and silk from China; amber, cotton and rugs from India; spices from Indonesia and Malaysia; and a variety of goods from Japan, including fans, chests, screens and porcelain. As the Qing expanded south following their victory at Shanhai Pass, the Southern Ming were supported by the Zheng clan. Zheng Zhilong surrendered the passes through Zhejiang in exchange for a wealthy retirement, but his son Zheng Chenggong—better known by his Hokkien honorific Koxinga—continued to resist from Xiamen and then, after wresting its control from the Dutch, Taiwan. His dynasty then developed it as the independent state of Tungning, but were driven from their mainland bases in 1661. The Qing regent Prince Rui resumed the sea ban in 1647, but it was not effective until a more severe order followed in 1661 upon the ascension of the Kangxi Emperor. In an evacuation known as the "Great Clearance" or "Frontier Shift", coastal residents of Guangdong, Fujian, Zhejiang, Jiangsu, and parts of Shandong were required to destroy their property and move inland (about ), with Qing soldiers erecting boundary markers and enforcing the death penalty on those beyond it. Ships were destroyed, and foreign trade was again limited to that passing through Macao. Checks and adjustments were made the following year, and the inhabitants of five counties—Panyu, Shunde, Xinhui, Dongguan, and Zhongshan—moved again the year after that. Following numerous high-level memorials, the evacuation was no longer enforced after 1669. In 1684, following the destruction of Tungning, other bans were lifted. The year after that, customs offices were established in Guangzhou, Xiamen, Ningbo, and Songjiang to deal with foreign trade. Repressive Qing policies such as the queue caused Chinese traders to emigrate in such large numbers, however, that the Kangxi Emperor began to fear the military implications. The immigrant community in Jakarta was estimated at 100,000 and rumors circulated that a Ming heir was living on Luzon. A ban on trade in the "Southern Ocean" followed in 1717, with tighter port inspections and travel restrictions. Emigrants were ordered to return to China within the next three years upon penalty of death; those emigrating in future were to face the same punishment.