The Huanggutun incident was 1928. Because according to historical records, Zhang was murdered by the Japanese in 1928.

Reasons for Huanggutun incident:

On the morning of June 3rd 1, Zhang left Beijing. At 5: 30 am on the 4th, a special car of Zhang entered Huanggutun, Shenyang. Under the bridge where Nanman Road and Jingfeng Road crossed, it made a loud noise, and the suspension bridge collapsed, just pressing on the third, fourth and fifth carriages. After the train was bombed, the scene was full of bodies, which was terrible. Zhang was seriously injured and died at 6: 438 am at the age of 55.

Historical facts:

According to all kinds of information leaked after Japan surrendered, the assassination of Zhang was indeed planned and organized by the Japanese Kwantung Army. At that time, the commander of the Kwantung Army was Lieutenant General Tetsutaro Muraoka. The important generals of the Kwantung Army believe that Zhang is the biggest obstacle for Japan to control the Northeast. If Zhang was not removed, Japan's resistance in the northeast was great, so Muraoka personally presided over the assassination of Zhang.

Reference to the above content: Baidu Encyclopedia-Huanggutun