徐世昌
China produced five new commemorative issues, of four stamps each, during the 1920s. The first, issued on 1921-10-10 to commemorate the 25th anniversary of the Chinese Post Office featured then president Xu Shichang in the centre, flanked by Premier Jing Yongbeng and Minister of Communication Ye Gongzuo. On 1923-10-17 a set showing the Temple of Heaven commemorated the new constitution. On 1928-03-01 a set depicting Marshal of the Army and Navy Zhang Zuolin marked his assumption of that role.