system: You are a contract-analysis assistant performing a span-extraction task. You are given an excerpt from a commercial contract and the name of a clause type to locate within it.

Return the exact text of the requested clause, copied verbatim from the excerpt — identical wording and punctuation, with no paraphrasing, summarising, explanation, or added commentary.

The excerpt is one window of a much longer contract and often will not contain the requested clause. If the requested clause does not appear in this excerpt, respond with exactly: Not found.

Output only the extracted clause text, or the exact string `Not found.` — nothing else.

user: Contract excerpt:
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Agreement and the cooperation relationship between the Parties, and request Party B to pay the liquidated damages of RMB 50,000 (RMB FIFTY THOUSAND) and indemnify for all losses incurred to Party A thereby. 16.3 Party A's e-mail address for receiving the report of any violation of Code of Business Conduct is jubao@didiia.com. In the event of any violation of its Code of Business Conduct found by Party A, Party B shall cooperate with Party A in the investigation as required by Party A. If Party B fails to cooperate with Party A in such investigation, it shall be deemed as a material breach by Party B. In such case, Party A is entitled to immediately terminate the Agreement and the cooperation relationship between the Parties, and request Party B to pay the liquidated damages of RMB50,000 (RMB FIFTY THOUSAND) and indemnify for all losses incurred to Party A thereby. 17. Transfer During the term of this Agreement, neither party may assign, or transfer its rights and obligations under this Agreement in whole or in part, without the prior written consent of the other party. However, Party A may transfer its rights and obligations under this Agreement to any of its Affiliates in whole or in part with the written notice to Party B, and Party B irrevocably agrees and permits Party A's such rights, provided that Party A shall ensure that such transferee or assignee will comply with relevant laws and regulations, and ensure that Party B is exempt from any liability and consequences arising from any violation of applicable laws and regulations by such transferee or assignee, and Party A shall indemnify for the losses incurred to Party B thereby. 18. Severability If any one or more provisions contained in this Agreement is held to be invalid, illegal or unenforceable in any way in accordance with any law or regulation, the validity, legality or enforceability of the remaining provisions in this Agreement shall not in any way be affected or impaired. Such invalid, illegal or unenforceable provision shall be replaced by a valid, legal or enforceable provision that has similar economic effects of such invalid, illegal or unenforceable provision by the Parties through good faith negotiation to the fullest extent permitted by laws and expected by the Parties. Contract No.: DDCX S DG KC 201812130044 19. Composition, Modification and Supplement of this Agreement 19.1 All Platform Rules are an integral part of this Agreement. In the event of any inconsistence between the Platform Rules and this Agreement, the Platform Rules shall prevail. If Party B signs this Agreement and uses the Platform, it shall accept to be bound by the Platform Rules. Party A is entitled to develop and revise the Platform Rules pursuant to the operation of the Platform. For the development and revision of the Platform Rules that may affect Party B's rights and obligations, Party A will notify Party B in writing via email 10 days prior to the implementation of the new Platform Rules, and Party B shall decide whether to continue to perform this Agreement within 10 days from the date of receipt of the notice via email. If Party B rejects the new Platform Rules, it shall send a written application for the termination of this Agreement to Party A within 10 days from the date of receipt of such notice. If Party B fails to terminate this Agreement or continue to log in and use the Platform within such 10-day period, it shall be deemed to agree to the new Platform Rules. The new Platform Rules shall become effective as of the effective date specified in the Platform Rules, and Party B shall strictly abide by the new Platform Rules as of the effective date. 19.2 Except for the Platform Rules, any modification and addition to this Agreement shall be signed by the Parties in writing. The modified and supplemental agreements signed by the Parties in connection with this Agreement shall be an integral part of this Agreement and shall have the same legal effect as this Agreement. 20. Limited Liability 20.1 Party A only provides the Platform, and Party B shall select (at its own discretion) the Driver Users to establish the consulting service relationship. Any dispute or controversy arising from the consulting services between Party B and any Driver User shall be settled by Party B and the Driver User, and Party A neither shall be liable for such dispute, nor shall be liable for the losses incurred to Party
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Extract the exact clause related to "Anti-Assignment" from the excerpt above.

assistant: During the term of this Agreement, neither party may assign, or transfer its rights and obligations under this Agreement in whole or in part, without the prior written consent of the other party.