legal ground
Article 963 of the Civil Code
If the broker facilitates the establishment of the contract, the principal shall pay the remuneration as agreed. If the remuneration of the broker is not agreed or clearly agreed, and cannot be determined according to the provisions of Article 510 of this Law, it shall be reasonably determined according to the services of the broker. Where an intermediary provides media services for concluding a contract, the remuneration of the intermediary shall be borne equally by both parties to the contract. If the intermediary facilitates the establishment of the contract, the expenses of the intermediary activities shall be borne by the intermediary.
Article nine hundred and sixty-four
If the broker fails to facilitate the establishment of the contract, he may not request payment; However, customers may be required to pay the necessary fees for intermediary activities as agreed.
Article nine hundred and sixty-five
After accepting the services of the broker, the principal shall pay remuneration to the broker if he uses the trading opportunities or media services provided by the broker to bypass the broker and directly conclude a contract.