To post copied novel chapters to Douyin, you can follow the steps below:

1. Open the Douyin application and log in to your account.

2. On the main page, click the "+" symbol at the bottom to enter the video recording interface.

3. In the video recording interface, click the "Props" icon in the lower left corner to enter the interface for selecting props.

4. In the interface for selecting props, slide to the left, find the "Acrostic Poem" prop, and click on it.

5. In the video recording interface, click the "Record" button to start recording the video.

6. During the video recording process, point the "acrostic poem" prop at your face and read the chapter of the novel you want to publish.

7. The recording time of the video should not be too long, preferably within 15 seconds.

8. After recording the video, click the "Next" button to enter the video publishing interface.

9. In the video publishing interface, fill in the title and description of the video, and select the tags you want to add.

10. Finally, click the "Publish" button to publish the video to the Douyin platform.

I hope the above information is helpful to you!