Doudian can sell virtual courses in the following ways. First, it is clear that virtual courses can be sold on Doudian. Secondly, the reason is that Doudian is an e-commerce platform with content as its core, and virtual courses are an important part of it. Finally, it is Doudian's platform that provides convenience and traffic support for the sale of virtual courses. Sellers can publish their own virtual courses on the platform and attract users through Doudian's marketing tools. At the same time, sellers can also receive payments through third-party payment tools such as Alipay or WeChat to ensure the safety and convenience of transactions.

Doudian has many ways to sell virtual courses, which can be achieved through the following steps:

1. Apply for virtual goods permissions on the Douyin platform and become a virtual goods store so that you can sell them on Doudian.

2. Prepare virtual course content, including videos, documents, course schedules, etc.

3. When pricing courses, you need to be cautious in terms of prices. They cannot be too high or too low. You must make comprehensive considerations based on factors such as the level of the same industry, course quality, and audience needs.

4. Promotion can be carried out through live broadcasts on Douyin, posting short videos, and associating with influencers/bloggers to increase exposure and user conversion. Summary: By opening virtual product permissions on Douyin, coordinating with prepared virtual course content, reasonable pricing and promotion, it is completely feasible and effective to sell virtual courses on Douyin stores, which can bring good economic benefits.