In 1922, Chang led a committee which drafted an outline for a constitution with a federal system of government. In 1923 Chang gave a lecture at Tsinghua University, the title was "outlook on life (人生觀)".
Chang's leadership in 1922 led to the creation of a constitutional framework with a federal system of government. Two years later, in 1923, Chang shared his thoughts on "outlook on life" at Tsinghua University.