---
title: I've learned... (PPT slides)
date: '2006-09-08T12:57:34+08:00'
slug: ive-learned-ppt-slides
---

I've learned... That life is tough, but I'm tougher.

Click [here](http://images.ruc.edu.cn/other/2006-09-08/1157697312864.rar) to download the file. (These slides are from an email of Prof. Ke Huixin.)
