What is the object of autumn writing in the old capital?

The autumn writing object of the old capital is the Japanese invaders.

Autumn in the old capital was written in August 1934. Yu Dafu had only been in Beijing for four days.

At that time, the Japanese invaders demanded that the area east of Guyuan and north of the Great Wall in Chahar Province be designated as Jehol Province. Subsequently, they launched a series of attacks on 29 army, creating two "Chadong events" successively.

Beijing (now Beijing), the ancient capital of Chinese civilization for thousands of years, is in jeopardy. Although Yu Dafu lives in Hangzhou, which is far from Beiping, he will feel the crisis of state affairs.

So when he arrived in Beiping, he was hurt by the scenery and wrote Autumn in the Old Capital, which described the "sad" scene, revealed the "sad" feelings and expressed his attachment to the old capital.