【正文】 s right is exclusively personal to the obligor. The scope of subrogation is limited to the extent of the obligee39。s early performance shall be borne by the obligor.Article 72 Right to Reject Partial Performance。(vi) If the party responsible for the expenses of performance was not clearly prescribed, the obligor shall bear the expenses.Article 63 Performance at Government Mandated PriceWhere a contract is to be implemented at a price mandated by the government or based on government issued pricing guidelines, if the government adjusts the price during the prescribed period of delivery, the contract price shall be the price at the time of delivery. Where a party delays in delivering the subject matter, the original price applies if the price has increased, and the new price applies if the price has decreased. Where a party delays in taking delivery or making payment, the new price applies if the price has increased, and the original price applies if the price has decreased.Article 64 Performance toward a Third PersonWhere the parties prescribed that the obligor render performance to a third person, if the obligor fails to render its performance to the third person, or rendered nonconforming performance, it shall be liable to the obligee for breach of contract.Article 65 Performance by a Third PersonWhere the parties prescribed that a third person render performance to the obligee, if the third person fails to perform or rendered nonconforming performance, the obligor shall be liable to the obligee for breach of contract.Article 66 Simultaneous PerformanceWhere the parties owe performance toward each other and there is no order of performance, the parties shall perform simultaneously. Prior to performance by the other party, one party is entitled to reject its requirement for performance. If the other party rendered nonconforming performance, one party is entitled to reject its corresponding requirement for performance.Article 67 Consecutive PerformanceWhere the parties owe performance toward each other and there is an order of performance, prior to performance by the party required to perform first, the party who is to perform subsequently is entitled to reject its requirement for performance. If the party required to perform first rendered nonconforming performance, the party who is to perform subsequently is entitled to reject its corresponding requirement for performance.Article 68 Right to Suspend PerformanceThe party required to perform first may suspend its performance if it has conclusive evidence establishing that the other party is in any of the following circumstances:(i) Its business has seriously deteriorated。 if the parties fail to reach a supplementary agreement, such term shall be determined in accordance with the relevant provisions of the contract or in accordance with the relevant usage.Article 62 Gap FillingWhere a relevant term of the contract was not clearly prescribed, and cannot be determined in accordance with Article 61 hereof, one of the following provisions applies: (i) If quality requirement was not clearly prescribed, performance shall be in accordance with the state standard or industry standard。s Court or an arbitration institution for amendment or cancellation of the contract.Where a party petitions for amendment of the contract, the People39。(iv) The contract harms public interests。(ii) intentionally concealing a material fact relating to the conclusion of the contract or supplying false information。(ii) Where the offer is made in a nonoral manner, the acceptance shall reach the offeror within a reasonable time.Article 24 Commencement of the Period for AcceptanceWhere an offer is made by a letter or a telegram, the period for acceptance mences on the date shown on the letter or the date on which the telegram is handed in for dispatch. If the letter does not specify a date, the period mences on the posting date stamped on the envelop. Where the offer is made through an instantaneous munication device such as telephone or facsimile, etc., the period for acceptance mences once the offer reaches the offeree.Article 25 Contract Formed upon Effectiveness of AcceptanceA contract is formed once the acceptance bees effective.Article 26 Effectiveness of AcceptanceA notice of acceptance bees effective once it reaches the offeror. Where the acceptance does not require notification, it bees effective once an act of acceptance is performed in accordance with the relevant usage or as required by the offer.Where a contract is concluded by the exchange of electronic messages, the time of arrival of the acceptance shall be governed by Paragraph 2 of Article 16 hereof.Article 27 Withdrawal of AcceptanceAn acceptance may be withdrawn. The notice of withdrawal shall reach the offeror before or at the same time as the acceptance.Article 28 Late AcceptanceAn acceptance dispatched by the offeree after expiration of the period for acceptance constitutes a new offer, unless the offeror timely advises the offeree that the acceptance is valid.Article 29 Delayed Transmission of AcceptanceIf the offeree dispatched its acceptance within the period for acceptance, and the acceptance, which would otherwise have reached the offeror in due time under normal circumstances, reaches the offeror after expiration of the period for acceptance due to any other reason, the acceptance is valid, unless the offeror timely advises the offeree that the acceptance has been rejected on grounds of the delay.Article 30 Acceptance Containing Material ChangeThe terms of the acceptance shall be identical to those of the offer. A purported acceptance dispatched by the offeree which materially alters the terms of the offer constitutes a new offer. A change in the subject matter, quantity, quality, price or remuneration, time, place and method of performance, liabilities for breach of contract or method of dispute resolution is a material ch