1. It is currently impossible to determine whether Zhang Tianyu's Douyin training is real, because the source of relevant information is unclear and cannot be authoritatively verified.

2. Most of the information about Zhang Tianyu's Douyin training that appears on the Internet is suspicious and has not been officially certified or authorized. For example, the training materials provided by some people may be counterfeit and untrue; the training effects advertised by some people may also be exaggerated and cannot be guaranteed.

3. If someone wants to learn about Douyin marketing and other related knowledge, they can obtain relevant tutorials or participate in certification training courses through official channels. For example, the Douyin official website provides official courses, practical guides, case sharing and other resources; well-known institutions such as Lingke Education have also launched certification and training services for Douyin marketing and other fields.

4. In addition, if you want to do a good job of marketing on social media such as Douyin, you also need to have certain market research capabilities, creation and operation capabilities, data analysis capabilities, etc. Therefore, you can learn and accumulate by reading books, participating in offline courses, and practicing by yourself.