docs: Update cn translation about ota

docs/en/migration-guides/release-5.x/5.5/system.rst

@@ -13,10 +13,10 @@ Log
 
 **Log V2** is introduced in this ESP-IDF version as an enhanced and optional logging implementation. It is fully compatible with **Log V1**, allowing projects to continue using **Log V1** without changes. Developers can enable **Log V2** via the Kconfig option :ref:`CONFIG_LOG_VERSION`. In future ESP-IDF versions, **Log V2** may become the default.
 
-**Key Points:**
+**Key Points**
 
 - Centralized log handling, dynamic formatting, and greater flexibility.
-- Slightly higher stack and IRAM usage, with a reduced binary size (refer to measurements in the log document).
+- Slightly higher stack and IRAM usage, with a reduced binary size (refer to measurements in the `Logging Library <../../../system/log.rst>`_ document).
 - **Log V2**-specific features (e.g., dynamic formatting, detecting the execution context) are not backward-compatible with **Log V1**.
 
 If you use the ``esp_log_write`` (or ``esp_log_writev``) function, replace it with ``esp_log`` (or ``esp_log_va``) to reduce one nested call.
@@ -38,4 +38,4 @@ The log handler (``esp_log``) supports internal formatting, so there is no need
 Pre-Encrypted OTA
 -----------------
 
-The 'pre_encrypted_ota' example has been moved to `idf-extra-components <https://github.com/espressif/idf-extra-components/tree/master/esp_encrypted_img/examples/pre_encrypted_ota>`__ repository.
+The ``pre_encrypted_ota`` example has been moved to the `idf-extra-components <https://github.com/espressif/idf-extra-components/tree/master/esp_encrypted_img/examples/pre_encrypted_ota>`__ repository.

docs/zh_CN/migration-guides/release-5.x/5.5/system.rst

@@ -4,11 +4,38 @@
 :link_to_translation:`zh_CN:[中文]`
 
 系统时间
------------------------
+--------
 
 * ``{IDF_TARGET_NAME}/rtc.h`` 已弃用，应使用 ``esp_rtc_time.h`` 替代。
 
-Log
----
+日志
+----
 
-.. include:: ../../../../en/migration-guides/release-5.x/5.5/system.rst
+**Log V2** 是 ESP-IDF v5.5 版本提供的增强型可选日志功能。它与 **Log V1** 完全兼容，项目无需修改即可继续使用 **Log V1**。开发者可以通过 Kconfig 选项 :ref:`CONFIG_LOG_VERSION` 启用 **Log V2**。未来的 ESP-IDF 版本可能默认使用 **Log V2**。
+
+**特性**
+
+- 集中化日志处理、可动态设置的格式参数和更高的灵活性。
+- 消耗更多的栈和内存，但二进制文件体积更小（具体数据详见文档 `日志库 <../../../system/log.rst>`_）。
+- **Log V2** 的特定功能（如动态设置格式、执行上下文检测）不能向后兼容 **Log V1**。
+
+如需使用 ``esp_log_write`` （或 ``esp_log_writev``）函数，请替换为 ``esp_log`` （或 ``esp_log_va``），以减少一层嵌套调用。
+
+日志处理程序 (``esp_log``) 支持内部格式化，因此无需手动构建格式。可以通过 ``ESP_LOG_LEVEL_LOCAL`` 简化以下代码。
+
+.. code-block:: c
+
+    #if ESP_LOG_VERSION == 2
+        ESP_LOG_LEVEL_LOCAL(ESP_LOG_ERROR, OT_PLAT_LOG_TAG, format, args);
+    #else
+        if (LOG_LOCAL_LEVEL >= ESP_LOG_ERROR) {
+            esp_log(ESP_LOG_CONFIG_INIT(ESP_LOG_ERROR), OT_PLAT_LOG_TAG, LOG_COLOR_E "E(%lu) %s:", esp_log_timestamp(), OT_PLAT_LOG_TAG);
+            esp_log_va(ESP_LOG_CONFIG_INIT(ESP_LOG_ERROR), OT_PLAT_LOG_TAG, format, args);
+            esp_log(ESP_LOG_CONFIG_INIT(ESP_LOG_ERROR), OT_PLAT_LOG_TAG, LOG_RESET_COLOR "\n");
+        }
+    #endif
+
+预加密 OTA
+------------
+
+``pre_encrypted_ota`` 示例已移至 `idf-extra-components <https://github.com/espressif/idf-extra-components/tree/master/esp_encrypted_img/examples/pre_encrypted_ota>`__ 仓库。