The restored Thousand-hand Bodhisattva in all its glory. May 5, 2015 [Photo/Xinhua],

After a seven-year restoration, the statue of Qianshou Guanyin (Thousand-hand Bodhisattva), on Mount Baoding in the Dazu district of Chongqing municipality, will reopen to the public on June 13, Chinese Cultural Heritage Day.

The 7.7-meter high and 12.5-meter wide statue, covered with gold foil and carved in a cave, could date back to the Southern Song Dynasty (1127 to 1279). According to experts the work is the most complete and scientific restoration in more than 800 years.

Over the centuries, Qianshou Guanyin's color had faded, parts of the gold foil had peeled off and cracks appeared. The State Administration of Cultural Heritage placed the sculpture on a protection list in 2008 and launched a restoration project. Involving experts and organizations in the field of historic monuments restoration from China and abroad.

Experts used both traditional Chinese techniques of gilding and lacquer painting as well as X-Ray inspection and other modern scientific methods. Because of the climate in Dazu, the team set up a micro environmental monitoring system, the first time such a system had been used in China.

"Skin protection" was introduced, like a skin cream covering the surface of the Thousand-hand Bodhisattva and conducive to the cleaning the surface.