What is the core content of "Shandong Province Cold Case Settlement Treaty"? Combined with the knowledge learned, the main reasons for this result are analyzed. Pray for the great gods.

Section 1 Return of Jiaozhou Old German Leased Land Article 1 Japan shall return Jiaozhou Old German Leased Land to China. Article 2 The Chinese and Japanese governments each appoint three people to be responsible for handing over the administrative power of JIAOZHOU Old German Concession and the public property in this area, and solving other matters that should be cleaned up, and jointly organizing a joint committee to discuss the implementation right of specific measures. To this end, the Joint Commission will be established immediately after the implementation of this Agreement. Article 3 The transfer of administrative power and public property of JIAOZHOU German old concession mentioned in the preceding article and the settlement of other matters shall be completed as soon as possible, in any case no later than six months after the implementation of this contract. Article 6 The public property transferred in the preceding paragraph shall not claim compensation from the China Municipal Government. However, the China government should return a fair and equitable percentage of all the expenses purchased and built by the Japanese government and previously maintained by the German government according to the expenses actually used by the Japanese government, but on the principle of excluding depreciation and estimating the present value. Article 7 The public property of Jiaozhou Old Germany leased land necessary for the establishment of the Japanese Consulate in Qingdao shall be retained by the Japanese government. Schools, temples, cemeteries and other public welfare undertakings of Japanese residents' groups are still managed by groups. ....................................................................................................................................................... ........................... Section 4 Qingdao Customs Article 12 When this Treaty comes into effect, Qingdao Customs shall be a part of China Customs. Article 131The Temporary Contract for Reopening Qingdao Customs signed on August 6, 995 shall be invalid as of the effective date of this contract. Section 5 Qingji Railway Article 14 Japan shall transfer the Qingji Railway, its branch lines and all ancillary industries, including docks, warehouses and other equivalent industries, to China. Article 15 China shall reimburse Japan according to the present value and actual price of the above railway industry. The actual price to repay the present value is 53,406, 14 1 goldmark (that is, the valuation of some industries left by the Germans) or the same price plus the actual cost of permanent road repair during the Japanese management period, minus considerable depreciation. The value of the wharf, warehouse and other industries opened in the above article does not need to be returned, but the permanent repair expenses during the management period in Japan must also be deducted from the depreciation as appropriate. The term of the Treasury bill is 15 years, but according to the choice of the China Municipal Government, the Treasury bill will be paid off in full or in part after five years. Before the national debt listed in the preceding article of Article 19 is paid off, the China Municipal Government should appoint a Japanese as the chief vehicle officer and a Japanese as the chief accountant, with the same authority as the chief accountant of China, and the term of office will end on the date when the national debt is paid off. The employee is under the command, jurisdiction and supervision of China District Director, and can be replaced if there are sufficient reasons. Section VII Mines Article 22 Mines located in Zichuan, Fangzi and Jinling Town are awarded to Germany by China in the form of mining rights, and shall be transferred to companies established in Germany. The share capital of the Japanese in the company shall not exceed that of China. The form and detailed conditions of these measures shall be agreed by the Joint Commission referred to in Article 2 of this Agreement. Section 8 Opening JIAOZHOU Old German Concession Article 23 The Japanese government declares that it has no intention to establish a Japanese exclusive concession or a public concession in JIAOZHOU Old German Concession. The China government also announced that all the old German leased land in Jiaozhou will be opened as commercial ports, allowing foreigners to live freely, run enterprises and other legal occupations in this area. Article 24 The China government even declared that the acquired rights of foreigners in the old German concession areas, whether they were legally and fairly acquired during the German lease period or during the Japanese military occupation, should be respected. The legal status and effectiveness of this right acquired by Japanese people or Japanese companies shall be decided by the Joint Committee established in accordance with Article 2 of this Agreement. Section 9 Saltworks Article 25 As salt is a patent undertaking of the China Municipal Government, both parties agree that all saltworks currently operated along the coast of Jiaozhou Bay that truly belong to the interests of Japanese people or Japanese companies will be bought back by the China Municipal Government fairly, and a certain amount of salt produced along the coast will be allowed to be sold to Japan under certain conditions. All measures, including the transfer of rights and interests to the Government of China, shall be prepared by the Joint Committee established in accordance with Article 2 of this Agreement and shall be completed as soon as possible, and in any case no later than six months after the implementation of this Agreement. Section 10 Submarine Electric Wire