2006年下半年，我刚手术出院后不久，一天，我加班比较晚回去，因为当时已经没有车了，袁松华提出送我回家。

In the second half of 2006, I had surgery and returned to work. One night, I worked late. Since there were no transportation by that late hour, Yuan Songhua offered to drive me come.

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吏永东与杜两省、史永东与齐鹰飞、袁志刚与何樟勇相继考察了中国经济的动态效率，结果均表明中国经济是动态无效的。

Some recent research, such as Shi and Du, Shi and Qi, Yuan and He, assessed dynamic efficiency in China with AMSZ criterion and reported that China's economy was dynamically inefficient.

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