Singaporean sovereign wealth fund Temasek and early stage venture capital firm DCM, among other unnamed investors, have participated in a US$60 million Series D financing round in Tuniu.com, an online booking platform targeting the leisure travel market. Tuniu.com previously received a Series A round of funding from venture firm Gobi Partners, a Series B round led by DCM and a Series C round led by venture capital firms Sequoia Capital and Highland Capital Partners and Japan-based internet service company Rakuten.