diff --git a/README.md b/README.md
index f5bc7406b9649730e43e9fe5cdb5b71eba7dc3aa..e15d86e285026a631dbf3312558f58dea2418114 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,6 @@ English | [简体中文](README_ch.md)
- 
@@ -24,7 +23,8 @@ PaddleOCR aims to create multilingual, awesome, leading, and practical OCR tools
**Recent updates**
-
+- 2021.12.21 OCR open source online course starts. The lesson starts at 8:30 every night and lasts for ten days.
+- 2021.12.21 release PaddleOCR v2.4, release 1 text detection algorithm (PSENet), 3 text recognition algorithms (NRTR、SEED、SAR), 1 key information extraction algorithm (SDMGR) and 3 DocVQA algorithms (LayoutLM、LayoutLMv2，LayoutXLM).
- PaddleOCR R&D team would like to share the key points of PP-OCRv2, at 20:15 pm on September 8th, [Course Address](https://aistudio.baidu.com/aistudio/education/group/info/6758).
- 2021.9.7 release PaddleOCR v2.3, [PP-OCRv2](#PP-OCRv2) is proposed. The inference speed of PP-OCRv2 is 220% higher than that of PP-OCR server in CPU device. The F-score of PP-OCRv2 is 7% higher than that of PP-OCR mobile.
- 2021.8.3 released PaddleOCR v2.2, add a new structured documents analysis toolkit, i.e., [PP-Structure](https://github.com/PaddlePaddle/PaddleOCR/blob/release/2.2/ppstructure/README.md), support layout analysis and table recognition (One-key to export chart images to Excel files).
@@ -38,7 +38,11 @@ PaddleOCR aims to create multilingual, awesome, leading, and practical OCR tools
- Ultra lightweight PP-OCR mobile series models: detection (3.0M) + direction classifier (1.4M) + recognition (5.0M) = 9.4M
- General PP-OCR server series models: detection (47.1M) + direction classifier (1.4M) + recognition (94.9M) = 143.4M
- Support Chinese, English, and digit recognition, vertical text recognition, and long text recognition
- - Support multi-language recognition: Korean, Japanese, German, French
+ - Support multi-language recognition: about 80 languages like Korean, Japanese, German, French, etc
+- document structurize system PP-Structure
+ - support layout analysis and table recognition (support export to Excel)
+ - support key information extraction
+ - support DocVQA
- Rich toolkits related to the OCR areas
- Semi-automatic data annotation tool, i.e., PPOCRLabel: support fast and efficient data annotation
- Data synthesis tool, i.e., Style-Text: easy to synthesize a large number of images which are similar to the target scene image
diff --git a/README_ch.md b/README_ch.md
index 48ef6797585190d455b17d32fe02429fa0903658..fae2a50f318b0282009f049373d5e3cf97e407f2 100755
--- a/README_ch.md
+++ b/README_ch.md
@@ -19,11 +19,13 @@ PaddleOCR旨在打造一套丰富、领先、且实用的OCR工具库，助力
## 近期更新
+- 2021.12.21 《OCR十讲》课程开讲，12月21日起每晚八点半线上授课！ 【免费】报名地址：https://aistudio.baidu.com/aistudio/course/introduce/25207
+- 2021.12.21 发布PaddleOCR v2.4。OCR算法新增1种文本检测算法（PSENet），3种文本识别算法（NRTR、SEED、SAR）；文档结构化算法新增1种关键信息提取算法（SDMGR），3种DocVQA算法（LayoutLM、LayoutLMv2，LayoutXLM）。
- PaddleOCR研发团队对最新发版内容技术深入解读，9月8日晚上20:15，[课程回放](https://aistudio.baidu.com/aistudio/education/group/info/6758)。
- 2021.9.7 发布PaddleOCR v2.3与[PP-OCRv2](#PP-OCRv2)，CPU推理速度相比于PP-OCR server提升220%；效果相比于PP-OCR mobile 提升7%。
- 2021.8.3 发布PaddleOCR v2.2，新增文档结构分析[PP-Structure](https://github.com/PaddlePaddle/PaddleOCR/blob/release/2.2/ppstructure/README_ch.md)工具包，支持版面分析与表格识别（含Excel导出）。
-> [更多](https://github.com/PaddlePaddle/PaddleOCR/blob/release/2.3/doc/doc_ch/update.md)
+> [更多](./doc/doc_ch/update.md)
## 特性
@@ -32,11 +34,14 @@ PaddleOCR旨在打造一套丰富、领先、且实用的OCR工具库，助力
- 超轻量PP-OCR mobile移动端系列：检测（3.0M）+方向分类器（1.4M）+ 识别（5.0M）= 9.4M
- 通用PPOCR server系列：检测（47.1M）+方向分类器（1.4M）+ 识别（94.9M）= 143.4M
- 支持中英文数字组合识别、竖排文本识别、长文本识别
- - 支持多语言识别：韩语、日语、德语、法语等
+ - 支持多语言识别：韩语、日语、德语、法语等约80种语言
+- PP-Structure文档结构化系统
+ - 支持版面分析与表格识别（含Excel导出）
+ - 支持关键信息提取任务
+ - 支持DocVQA任务
- 丰富易用的OCR相关工具组件
- 半自动数据标注工具PPOCRLabel：支持快速高效的数据标注
- 数据合成工具Style-Text：批量合成大量与目标场景类似的图像
- - 文档分析能力PP-Structure：支持版面分析与表格识别（含Excel导出）
- 支持用户自定义训练，提供丰富的预测推理部署方案
- 支持PIP快速安装使用
- 可运行于Linux、Windows、MacOS等多种系统
diff --git a/doc/doc_ch/update.md b/doc/doc_ch/update.md
index 0852e240886b4ca736a830c8c44651ca35ec1f25..de5cdaf2aa24aa4c32e81001cdccec1156ee8605 100644
--- a/doc/doc_ch/update.md
+++ b/doc/doc_ch/update.md
@@ -1,4 +1,6 @@
# 更新
+- 2021.12.21 《OCR十讲》课程开讲，12月21日起每晚八点半线上授课！ 【免费】报名地址：https://aistudio.baidu.com/aistudio/course/introduce/25207
+- 2021.12.21 发布PaddleOCR v2.4。OCR算法新增1种文本检测算法（PSENet），3种文本识别算法（NRTR、SEED、SAR）；文档结构化算法新增1种关键信息提取算法（SDMGR），3种DocVQA算法（LayoutLM、LayoutLMv2，LayoutXLM）。
- 2021.9.7 发布PaddleOCR v2.3，发布[PP-OCRv2](#PP-OCRv2)，CPU推理速度相比于PP-OCR server提升220%；效果相比于PP-OCR mobile 提升7%。
- 2021.8.3 发布PaddleOCR v2.2，新增文档结构分析[PP-Structure](https://github.com/PaddlePaddle/PaddleOCR/blob/release/2.2/ppstructure/README_ch.md)工具包，支持版面分析与表格识别（含Excel导出）。
- 2021.6.29 [FAQ](https://github.com/PaddlePaddle/PaddleOCR/blob/release/2.2/doc/doc_ch/FAQ.md)新增5个高频问题，总数248个，每周一都会更新，欢迎大家持续关注。
diff --git a/doc/doc_en/update_en.md b/doc/doc_en/update_en.md
index 660688c6d6991a4744dbc327d24e9c677afa0fc1..5341f92f3752ccbd250b45a7b0bd602f3ed65db0 100644
--- a/doc/doc_en/update_en.md
+++ b/doc/doc_en/update_en.md
@@ -1,4 +1,6 @@
# RECENT UPDATES
+- 2021.12.21 OCR open source online course starts. The lesson starts at 8:30 every night and lasts for ten days.
+- 2021.12.21 release PaddleOCR v2.4, release 1 text detection algorithm (PSENet), 3 text recognition algorithms (NRTR、SEED、SAR), 1 key information extraction algorithm (SDMGR) and 3 DocVQA algorithms (LayoutLM、LayoutLMv2，LayoutXLM).
- 2021.9.7 release PaddleOCR v2.3, [PP-OCRv2](#PP-OCRv2) is proposed. The CPU inference speed of PP-OCRv2 is 220% higher than that of PP-OCR server. The F-score of PP-OCRv2 is 7% higher than that of PP-OCR mobile.
- 2021.8.3 released PaddleOCR v2.2, add a new structured documents analysis toolkit, i.e., [PP-Structure](https://github.com/PaddlePaddle/PaddleOCR/blob/release/2.2/ppstructure/README.md), support layout analysis and table recognition (One-key to export chart images to Excel files).
- 2021.4.8 release end-to-end text recognition algorithm [PGNet](https://www.aaai.org/AAAI21Papers/AAAI-2885.WangP.pdf) which is published in AAAI 2021. Find tutorial [here](https://github.com/PaddlePaddle/PaddleOCR/blob/release/2.1/doc/doc_en/pgnet_en.md)；release multi language recognition [models](https://github.com/PaddlePaddle/PaddleOCR/blob/release/2.1/doc/doc_en/multi_languages_en.md), support more than 80 languages recognition; especically, the performance of [English recognition model](https://github.com/PaddlePaddle/PaddleOCR/blob/release/2.1/doc/doc_en/models_list_en.md#English) is Optimized.