QUNR [Qunar Cayman Islands] CORRESP: New York Menlo Park Washington DC São Paulo

[New York Menlo Park Washington DC São Paulo London Paris Madrid Tokyo Beijing Hong Kong Li He LLP Davis Polk & Wardwell 2201 China World Office 2 1 Jian Guo Men Wai Avenue Chaoyang District Beijing 100004 86 10 8567 5005 tel 86 10 8567 5105 fax li.he@davispolk.com October 30, 2013 Qunar Cayman Islands Limited Registration Statement on Form F-1]

CLNT [Cleantech Solutions International,] DEF 14A: (Original Filing)

[x o Check the appropriate box: o Preliminary Proxy Statement o x Definitive Proxy Statement o Definitiveditional Materials o Cleantech Solutions International, Payment of Filing Fee (Check the appropriate box): x No fee required. o Feemputed on table below per Exchange Act Rules 14a-6(i)(4) and 0-11. (1)]

QUNR [Qunar Cayman Islands] F-1/A: (Original Filing)

[CALCULATION OF REGISTRATION FEE Title of Each Class of Securities to be Registered (1) (2) Amount of shares (1) Proposed maximum (2) Proposed Maximum (4) Amount Of Class B Ordinary shares, par value US$0.001 per share (2) (3) 38,332,950 US$4.67 US$178,877,100 US$23,989 (1) (2) (3) American depositary shares issuable upon deposit of the Class B ordinary shares registered hereby have] [Consent of Independent Registered Public Accounting Firm We consent to the reference to our firm under the caption “Experts” and to the use of our report dated April 12, 2013, in Amendment No. 6 to the Registration Statement (Form F-1 No. 333-191459) and related Prospectus of Qunar Cayman Islands Limited for the registration of its ordinary shares. Beijing, People’s Republic]

CLNT [Cleantech Solutions International,] DEF 14A: x o Check the appropriate box: o Preliminary

[x o Check the appropriate box: o Preliminary Proxy Statement o x Definitive Proxy Statement o Definitiveditional Materials o Cleantech Solutions International, Payment of Filing Fee (Check the appropriate box): x No fee required. o Feemputed on table below per Exchange Act Rules 14a-6(i)(4) and 0-11. (1)]

QUNR [Qunar Cayman Islands] F-1/A: CALCULATION OF REGISTRATION FEE Title of Each Class

[CALCULATION OF REGISTRATION FEE Title of Each Class of Securities to be Registered (1) (2) Amount of shares (1) Proposed maximum (2) Proposed Maximum (4) Amount Of Class B Ordinary shares, par value US$0.001 per share (2) (3) 38,332,950 US$4.67 US$178,877,100 US$23,989 (1) (2) (3) American depositary shares issuable upon deposit of the Class B ordinary shares registered hereby have] [Consent of Independent Registered Public Accounting Firm We consent to the reference to our firm under the caption “Experts” and to the use of our report dated April 12, 2013, in Amendment No. 6 to the Registration Statement (Form F-1 No. 333-191459) and related Prospectus of Qunar Cayman Islands Limited for the registration of its ordinary shares. Beijing, People’s Republic]

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