On November 14, the 23rd year of the reign of Emperor Guangxu of the Qing Dynasty (1897), Germany invaded and occupied Qingdao under the pretext of the "Juye Mission Case", and Qingdao became a colony.

In 1897, two German missionaries were killed for bullying civilians in Zhangjiazhuang, Juye County, Caozhou Prefecture, Shandong Province. This was an accidental incident that occurred against the background of constant conflicts between the church and the Chinese people. However, it was recorded in history because Germany used this as an excuse to send troops to occupy Jiaozhou Bay. This is the "Juye Mission Case".

On November 14, 1897, German warships easily landed from the trestle without the Qing army being prepared, and then forced the Qing government to sign the "Jiaoao Lend-Lease Treaty". Construction began in 1891 The "young" Qingdao (then known as Jiao'ao) fell into the claws of the German Eagle, and a far-reaching history was unveiled.

Extended information:

In the third year of the Republic of China (1914), World War I broke out, and Japan occupied Qingdao instead of Germany. In the eighth year of the Republic of China (1919), China took the recovery of Qingdao's sovereignty as the trigger and broke out the "May Fourth Movement", which was a watershed in China's modern and modern history.

On December 10, the 11th year of the Republic of China (1922), the Beiyang Government of China took back Qingdao and turned it into a commercial port. In July of the 18th year of the Republic of China (1929), the National Government established Qingdao Special City, which was renamed Qingdao City in 1930.

In January of the twenty-seventh year of the Republic of China (1938), Japan invaded and occupied Qingdao again. In September of the 34th year of the Republic of China (1945), the Nationalist Government took over Qingdao and it remained a special city.

Baidu Encyclopedia--Qingdao "Historical Evolution"