徐世昌
Huang reappeared into public life by supporting China's entry into World War I hoping it would regain lost territories. He worked with President Xu Shichang as a diplomat, co-wrote books about economics and foreign affairs and would often guest lecturer at universities. He was part of China's delegation to the 1921 Washington Naval Conference which secured the Beiyang government's greatest diplomatic triumph, the return of Shandong.