Why can't qq comments be sent in large paragraphs?

The text length exceeds the limit of QQ. You can only enter up to 600 characters for a single status or conversation published by QQ. If this limit is exceeded, it cannot be published.

1, network connection problem. QQ may not be able to send long text if the network connection is unstable or the signal is weak.

2. The account number is abnormal. If the account is abnormal or blocked, it will lead to the inability to send long messages.