1. When sending a large text message in DingTalk, it is automatically converted into a text file. See Figure 1.
2. After resending it twice, its size was accurately truncated to 39.0 KB (40,000 bytes). See Figure 2.
3. Viewing the contents of the text file, the originally JSON-formatted text message had its format broken due to being truncated. See Figure 3.
4. Ultimately, I had to first save the text message into a text file and send the text file to ensure it was sent completely. See Figure 4.
