China officials yesterday renewed objection to an auction of looted Chinese relics, following a flood of criticism from netizens over Wednesday's auction of an imperial jade seal in London.

Officials from the State Administration of Cultural Heritage yesterday said the government would spend more manpower and money to collect, clean up and study China's lost relics, and would resort to various measures to get the lost relics back.

An imperial jade seal, owned by the Qing Dynasty Emperor Qianlong, who ruled China from 1736 to 1795, fetched 3.6 million pounds ($5.9 million), six times its top estimate.