Then the day when people were still fussing with fear happened: it was the Mukden Incident of September 18, 1981. This was the day Pu Yi had been anxiously waiting anxiously for the past 19 years. Mukden was originally the ancient capital of the Manchus, and today is Shenyang, the capital of Liaoning province. Classroom why art poster. This event was the spectacular work of colonels Doihara and Itagaki, as a plausible reason for the Japanese to occupy Manchuria. According to the Quan Dong Corps report.