Chinese Ambassador to the US Cui Tiankai (right back row) and US Assistant Secretary of State for Educational and Cultural Affairs Evan Ryan (left back row) observe the signing for the return of 22 recovered artifacts to the Chinese government. The certificate was signed by US Immigration and Customs Enforcement Deputy Director Daniel Ragsdale (front left) and China's Deputy Director General of State Administration of Cultural Heritage Gu Yucai in a ceremony held at the Chinese embassay in Washington on Thursday afternoon. Chen Weihua/China Daily