 As the Chinese high command initially refused to admit that Sun had been bribed, and some troops under his command had valiantly fought the Japanese, Sun's reputation was slightly rehabilitated in course of the campaign, an opportunity he seized to expand his strength.At the time of the Tanggu Truce, Sun's troops garrisoned the strategic Peiking–Suiyuan Railway.In May 1933, with Feng Yuxiang organizing the Chahar People's Anti-Japanese Army, Sun also advocated opposition to Japan and criticized Chiang Kai-shek's central government, yet protested his loyalty to Chiang.