stoppage of the prospec ng or designing work, or the revision of the design, the contract-o ering party shall pay addi onal fees according to the amount of work actually undertaken by the prospec ng or designing party. Ar cle 806 Where a contractor delegates or illegally subcontracts the construc on project to others, the contract-o ering party may rescind the contract. Where the main construc on materials, construc on components and accessories, and equipment provided by the contract-o ering party fail to conform to the mandatory standard, or the contract-o ering party fails to perform his obliga ons to provide assistance, so that the contractor cannot undertake the construc on work, if the contract-o ering party s ll fails to perform the corresponding obliga ons within a reasonable period of me a er being demanded, the contractor may rescind the contract. Where, a er the contract is rescinded, the quality of the completed construc on project is found to be up to standard, the contract-o ering party shall make corresponding payment for the construc on project in accordance with the agreement. If the quality of the completed construc on project is found to be substandard, the provisions of Ar cle 793 of this Code shall be applied muta s mutandis. Ar cle 807 Where a contract-o ering party fails to pay the price in accordance with the agreement, the contractor may demand the contract-o ering party to make the payment within a reasonable period of me. Where the contract-o ering party s ll fails to pay the price upon expira on of the said period, the contractor may nego ate with the contract-o ering party to appraise the construc on project to sa sfy the obliga on, or request the people's court to sell the project through auc on in accordance with law, unless the construc on project is by its nature unsuitable for appraisal or auc on. The payment for the construc on of the project shall be sa s ed, in priority, from the proceeds obtained from the appraisal or auc on of the said project. Ar cle 808 For ma ers not provided in this Chapter, the relevant provisions on work contracts shall be applied. Chapter XIX Transport Contracts Sec on 1 General Rules Ar cle 809 A transport contract is a contract under which a carrier transports a passenger or goods from the place of dispatch to a des na on agreed by the par es, and the passenger, consignor, or consignee pays the fare or the freight. Ar cle 810 A carrier engaging in public transport may not reject an ordinary and reasonable transport request made by a passenger or consignor. Ar cle 811 A carrier shall safely transport a passenger or goods to a des na on as agreed within the agreed or a reasonable period of me. Ar cle 812 A carrier shall transport a passenger or goods to a des na on as agreed via an agreed or a usual transport route. Ar cle 813 A passenger, consignor, or consignee shall pay the fare or the freight. If a carrier does not transport via an agreed route or the usual route, thus increasing the fare or the freight, the passenger, consignor, or consignee may refuse to pay the extra fare or freight. Sec on 2 Passenger Transport Contracts Ar cle 814 A passenger transport contract is formed at the me when the carrier issues a cket to the passenger, unless otherwise provided by the par es or in accordance with the course of dealing. ti ti ti ti ti ff ff ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ff ti ti ff ti ff ti ti ti ti fi ti ff ff ti ti ff tt ff ft ff ti ft ti ti ti ti ti ti ti ti ti ti ti ti ti ti 87