Yunqi Academy did not have a unified contract age for authors. The specific contract age had to be determined according to the author's personal situation and the platform's regulations. Generally speaking, the platform would be more friendly to young authors and provide more opportunities and resources to encourage the growth and development of young authors. For authors who already had some writing experience and good writing skills, the platform might be more inclined to let them sign the contract directly. The specific age requirement for signing a contract may be reflected on the official website of Yunqi Academy or in the recruitment information. The author is recommended to check it out.