Xiaomi Home Assistant Network Connectivity Issue

## Introduction
The Xiaomi Home Assistant is a smart home device that integrates various Xiaomi devices, allowing users to control and monitor their home appliances remotely. However, some users have reported a network connectivity issue where the device becomes unavailable after a few minutes, and the only solution is to restart the Home Assistant.

## Problem Description
The issue occurs when the Xiaomi device is connected to the Home Assistant, and after a few minutes, the device becomes unavailable. When trying to configure or submit changes, an error message appears, indicating a network connection exception. The only way to resolve the issue is to restart the Home Assistant.

## Steps to Reproduce
To reproduce the issue, follow these steps:
1. Connect the Xiaomi device to the Home Assistant.
2. Wait for 5-6 minutes.
3. Try to configure or submit changes to the device.
4. An error message will appear, indicating a network connection exception.

## Expected Behavior
The expected behavior is that the Xiaomi Home Assistant should maintain a stable connection to the device and allow users to configure and control their devices without any issues.

## Reproduce Time
The issue can be reproduced at any time, but it typically occurs every 5-6 minutes.

## Home Assistant Logs
Unfortunately, the system logs do not provide any error messages or clues to resolve the issue.

## Log Timezone
The log timezone is set to Asia/Shanghai.

## Home Assistant Core Version
The Home Assistant Core version is 2025-8-3.

## Home Assistant Operation System Version
The Home Assistant Operation System version is 13.

## Xiaomi Home Integration Version
The Xiaomi Home Integration version is v0.4.2.

## Additional Context
There is no additional context or information available to resolve the issue.

## Conclusion
The Xiaomi Home Assistant network connectivity issue is a frustrating problem that can be resolved by restarting the Home Assistant. However, this is not a permanent solution, and the issue will recur after a few minutes. To resolve the issue permanently, further investigation and debugging are required.