At the biggest cross-straits meeting ever last weekend , top Chinese officials detailed measures to 8,000 Taiwanese to help the island's ailing economy – purchase missions, investment by mainland firms and 600,000 tourists this year. Among the 8,000 were members of the opposition Democratic Progressive Party (DPP) who attended against the wishes of their chairwoman Tsai Ing-wen. They included Hsu Hsin-liang, one of the party's founders and a former chairman. On May 21, Chen Chu, the , DPP mayor of Kaohsiung, will lead a 20-member team to Beijing and Shanghai. She will be the most senior DPP member to visit the mainland.