Minors could sign a contract with Yunqi Academy. According to the Contract Law of the People's Republic of China, a minor has full capacity for civil conduct and can sign and perform contracts independently. Therefore, a minor could sign a contract with Yunqi Academy and bear the legal responsibility stipulated in the contract. It should be noted that the minor should be represented by his guardian before signing the contract and guarantee the legal interests of the guardian. In addition, Yunqi Academy should provide the necessary legal advice and risk warning to the minor during the signing process to ensure that the minor would not fall into unnecessary legal risks during the signing process. Having an ID card was one of the sufficient conditions for signing a contract as a minor, but it was not a necessary condition. If a minor needs to sign a contract, Yunqi Academy shall negotiate with their guardian and provide them with a contract text and legal advice suitable for their age and development stage after taking into account the actual situation and needs of the minor.