The Contractors may, with the approval of the Corporation, and subject to all their obligations, transfer or delegate all or any of their rights, powers, and discretions, to their successors or assigns. ARTICLE XVII As soon as this Preliminary Agreement is signed it shall be forwarded to the Government of the Republic of China for approval. When it has met with the approval of the Government of the Republic of China, a necessary Detailed Agreement shall be made embodying the principles of this Agreement with such amplifications and additions as may be mutually agreed upon between the parties hereto. ARTICLE XVIII On its approval of this Agreement, and acceptance of the obligations set forth herein, the Government of the Republic of China shall officially notify the British Minister at Peking of the fact, and this approval shall be taken as covering the Detailed Agreement referred to in Article 17. ARTICLE XIX This Agreement is executed in quadruplicate in English and Chinese, one copy to be retained by the Corporation, one to be forwarded to the Government of the Republic of China, one to be forwarded to the British Minister at Peking, and one to be retained by the Contractors, and should any doubt arise as to the interpretation of the Agreement the English text shall be accepted as the standard. Signed at Shanghai by the contracting parties on this fourth day of the seventh month of the second year of the Republic of China being the fourth day of July nineteen hundred and thirteen. APPENDIX II Legation of the United States of America Peking, March 17, 1919. Dr. Sun Yat Sen, 29 Rue Molière, Shanghai, Kiangsu. DEAR DR. SUN: I have read with great interest your sketch project for the international development of China as embodied in your letter of February first to me. I congratulate you upon the broad and statesmanlike attitude with which you treat this very important subject. Your suggestion of united international participation in the development of China's resources deserves the support of all friends of China. It would be unfortunate indeed if the old régime of spheres of influence, struggles for concessions and activities flavoring of selfish exploitation should not, with the conclusion of the war, be relegated to the past. You are right in recognizing the necessity of a substitute for the old order and your proposal of a unified policy under international organization with Chinese participation for the larger development in China, naturally assuming that the inalienable rights of the Chinese people are to be amply safeguarded, meets this demand admirably.