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1：视频案例1

[视频](http://file.syntheticreality.cn/ys/qianlao-hangtianshaonian.mp4)

<iframe src="http://file.syntheticreality.cn/ys/qianlao-hangtianshaonian.mp4" scrolling="no" border="0" frameborder="no" framespacing="0" allowfullscreen="true"> </iframe>

2：视频案例2

<iframe src="http://file.syntheticreality.cn/ys/qianlao-hangtianshaonian.mp4" scrolling="no" border="0" frameborder="no" framespacing="0" allowfullscreen="true"> </iframe>