1. First, the date and title of the letter. Write the date, and then write "Dear Leader of Shanghai Market Supervision Bureau" at the beginning of the letter.

2. Briefly explain your problem. At the beginning of the letter, briefly describe the situation of Chinese painting running in Shanghai training institutions, what impact it has on you or others, and your expectation for the help of the market supervision bureau.

3. Provide detailed information. In the main part of the letter, provide as detailed and accurate information as possible, including basic information such as the name, address and legal representative of the training institution, as well as specific issues involved, such as fraud and breach of contract. Whether there is relevant evidence, such as contracts, receipts, notices, etc. , you can also provide.

4. Express expectations for the Market Supervision Bureau. At the end of the letter, express your expectations for the market supervision bureau, and hope that they can take prompt action to investigate and solve this matter. We can express our trust in the law enforcement of the market supervision bureau, and hope that they will strengthen the supervision of training institutions and protect the legitimate rights and interests of consumers.

5. Fill in personal contact information. Leave your contact information at the end of the letter, such as mobile phone number and email address, so that the market supervision bureau can contact you in time.

6. Conclusion and signature. At the end of the letter, you can write thank you for your concern and support, and sign your name at the bottom.

Please note that when you write a letter, you should pay attention to the proper tone and wording, and you must follow courtesy and respect. In addition, it is suggested to send the letter by registered mail or express delivery to ensure that it can be received by the market supervision bureau in time.