1, official website: Peanut Thirteen has its own official website, and you can buy online courses directly in official website.
2. Online education platform: Some online education platforms such as Netease Cloud Classroom and Massive Open Online Course Network also provide online courses of Peanut XIII, which can be searched and purchased on these platforms.
3. Third-party e-commerce platforms: On e-commerce platforms such as Taobao and JD.COM, there are also some merchants offering online sales of Peanut XIII, which can be searched and purchased on these platforms.