add mixture competition (#174)

README.md

@@ -41,6 +41,8 @@ Welcome to join our [Slack channel](https://join.slack.com/t/data-juicer/shared_
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 ## News
+- ![new](https://img.alicdn.com/imgextra/i4/O1CN01kUiDtl1HVxN6G56vN_!!6000000000764-2-tps-43-19.png) [2024-01-10] Discover new horizons in "Data Mixture"—Our second data-centric LLM competition has kicked off! Please visit the competition's [official website](https://tianchi.aliyun.com/competition/entrance/532174) for more information.
+
 - ![new](https://img.alicdn.com/imgextra/i4/O1CN01kUiDtl1HVxN6G56vN_!!6000000000764-2-tps-43-19.png) [2024-01-05] We release **Data-Juicer v0.1.3** now! 
 In this new version, we support **more Python versions** (3.7-3.10), and support **multimodal** dataset [converting](tools/multimodal/README.md)/[processing](docs/Operators.md) (Including texts, images, and audios. More modalities will be supported in the future).
 Besides, our paper is also updated to [v3](https://arxiv.org/abs/2309.02033).

README_ZH.md

@@ -39,6 +39,8 @@ Data-Juicer 是一个一站式数据处理系统，旨在为大语言模型 (LLM
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 ## 新消息
+- ![new](https://img.alicdn.com/imgextra/i4/O1CN01kUiDtl1HVxN6G56vN_!!6000000000764-2-tps-43-19.png) [2024-01-10] 开启“数据混合”新视界——第二届Data-Juicer大模型数据挑战赛已经正式启动！立即访问[竞赛官网](https://tianchi.aliyun.com/competition/entrance/532174)，了解赛事详情。
+
 - ![new](https://img.alicdn.com/imgextra/i4/O1CN01kUiDtl1HVxN6G56vN_!!6000000000764-2-tps-43-19.png) [2024-01-05] 现在，我们发布了 **Data-Juicer v0.1.3** 版本！ 
 在这个新版本中，我们支持了**更多Python版本**（3.7-3.10），同时支持了**多模态**数据集的[转换](tools/multimodal/README_ZH.md)和[处理](docs/Operators_ZH.md)（包括文本、图像和音频。更多模态也将会在之后支持）。
 此外，我们的论文也更新到了[第三版](https://arxiv.org/abs/2309.02033) 。