【正文】 ontract voluntarily under the law, and no entity or individual may unlawfully interfere with such right. Article 5 Fairness The parties shall abide by the principle of fairness in prescribing their respective rights and obligations. Article 6 Good Faith The parties shall abide by the principle of good faith in exercising their rights and performing their obligations. Article 7 Legality In concluding or performing a contract, the parties shall abide by the relevant laws and administrative regulations, as well as observe social ethics, and may not disrupt social and economic order or harm the public interests. Article 8 Binding Effect。 Contract through Agent In entering into a contract, the parties shall have the appropriate capacities for civil rights and civil acts. A party may appoint an agent to enter into a contract on its behalf under the law. Article 10 Forms of Contract。 (ii) subject matter。 (iv) quality。 (vi) time, place and method of performance。 (viii) method of dispute resolution. The parties may enter into a contract by referencing a model contract for the relevant contract category. Article 13 OfferAcceptance A contract is concluded by the exchange of an offer and an acceptance. Article 14 Definition of Offer An offer is a party‘s manifestation of intention to enter into a contract with the other party, which shall ply with the following: (i) Its terms are specific and definite。 if no specific system has been designated, the time when the electronic message first enters into any of the recipient‘s systems is deemed its time of arrival. Article 17 Withdrawal of Offer An offer may be withdrawn. The notice of withdrawal shall reach the offeree before or at the same time as the offer. Article 18 Revocation of Offer An offer may be revoked. The notice of revocation shall reach the offeree before it has dispatched a notice of acceptance. Article 19 Irrevocable Offer An offer may not be revoked: (i) if it expressly indicates, whether by stating a fixed time for acceptance or otherwise, that it is irrevocable。 (ii) The offeror lawfully revokes the offer。 (iv) The offeree makes a material change to the terms of the offer. Article 21 Definition of Acceptance An acceptance is the offeree‘s manifestation of intention to assent to an offer. Article 22 Mode of Acceptance。 (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 Acceptance Where 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 Acceptance A contract is formed once the acceptance bees effective. Article 26 Effectiveness of Acceptance A 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 Acceptance An acceptance may be withdrawn. The notice of withdrawal shall reach the offeror before or at the same time as the acceptance. Article 28 Late Acceptance An 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 Acceptance If 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 Change The 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 change to the terms of the offer. Article 31 Acceptance Containing Nonmaterial Changes An acceptance containing nonmaterial changes to the terms of the offer is nevertheless valid and the terms thereof prevail as the terms of the contract, unless the offeror timely objects to such changes or the offer indicated that acceptance may not contain any change to the terms thereof. Article 32 Time of Formation in Case of Memorandum of Contract Where the parties enter into a contract by a memorandum of contract, the contract is formed when it is signed or sealed by the parties. Article 33 Time of Formation in Case of Letters or Electronic Messages。 Electronic Messages The place where the acceptance bees effective is the place of formation of a contract. Where a contract is concluded by the exchange of electronic messages, the recipient‘s main place of business is the place of formation of the contract。 Duty to Call Attention Where a contract is concluded by way of standard terms, the party supplying the standard terms shall abide by the principle of fairness in prescribing th