Chinese government will invest 170 million RMB to maintain the Potala Palace for the second time. In order to maintain its original looks, iterative reconnoissance, design, experiment and so on have been done. By now more than 3 million RMB have been invested into it.

　　　　　　　　　

The thickness of the ridge of the groud in the Potala Palace reaches 3 meters. After maintaining it will still be the original status.