東清鐵路
As the subordinate of Zhang Zuolin, Zhu Qinglan served as chief executive of the Eastern Provinces Special District, which comprised the route of the Chinese Eastern Railway, from 4 December 1922 to 1924. During his tenure, the district was redesignated the Eastern provinces Special Region on 1 March 1923 and given full administrative independence equal to that of a province. Near the end of his tenure, an agreement on joint Soviet-Chinese operation of the Chinese Eastern Railway was reached on 31 May 1924.