Treasures under the hammer

Guardian Auctions has handled many of China's valuable cultural relics over their 20 years in business. Now, a retrospective exhibition displays some of the most breathtaking pieces of China's past that have passed through their hands. Lin Qi reports.

Several decades after their split in the social chaos of the 1920s, a Sui Dynasty (AD 581-618) calligraphy work, which used to be part of the Qing Dynasty (1644-1911) court collection, has been reunited with its postscript in Beijing.

The work in its entirety is now on public display at the National Museum of China.