Zhang Binglin
Because of these failures, Sun's leadership was challenged by elements from within the Tongmenghui who wished to remove him as leader. In Tokyo 1907–1908 members from the recently merged Restoration society raised doubts about Sun's credentials. Tao Chengzhang () and Zhang Binglin publicly denounced Sun with an open leaflet called "A declaration of Sun Yat-sen's criminal acts by the revolutionaries in Southeast Asia". This was printed and distributed in reformist newspapers like Nanyang Zonghui Bao. Their goal was to target Sun as a leader leading a revolt for profiteering gains.